We narrowed to 7,673 results for: tet on
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Plasmid#52686PurposeSame as 41024, with additional linkerDepositorInserttetO7-Pcyc1-3xHA+LINKER
UsePromoter replacementExpressionYeastAvailable SinceApril 28, 2014AvailabilityAcademic Institutions and Nonprofits only -
IR904: pMVP (L3-L2) pA; CMV::eGFP-P2A-TETa-pA
Plasmid#121799PurposepMVP L3-L2 entry plasmid, contains polyA + CMV-eGFP-P2A-TETa-polyA for 3- or 4-component MultiSite Gateway Pro assembly. Adds CMV-driven GFP-P2A-TETa downstream of gene of interest.DepositorInsertpolyA + CMV::eGFP-P2A-TETa-polyA
UseSynthetic Biology; Pmvp gateway entry plasmidAvailable SinceJune 27, 2019AvailabilityAcademic Institutions and Nonprofits only -
pPB-TetON-mEGFP-HMGB1-MUT-Patchless
Plasmid#194563PurposeDox-inducible Mammalian Expression of mEGFP-HMGB1 Mutant "Patchless" (K184Rfs*44, "Patchless" variant) Fusion ProteinDepositorInsertHMGB1 (HMGB1 Human)
TagsmEGFPExpressionMammalianMutationK184Rfs*44, truncation by stop codon after Lys209Available SinceFeb. 23, 2023AvailabilityAcademic Institutions and Nonprofits only -
PB-PGK-FKBP-Ztetv-Cit-tvhc-DHFR
Plasmid#116052PurposeReporter plasmid for measuring protease activityDepositorInsertFKBP-Ztetv-Cit-tvhc-DHFR
ExpressionMammalianAvailable SinceOct. 15, 2018AvailabilityAcademic Institutions and Nonprofits only -
pSpdCas9-hudTET1CD-T2A-mCherry(PX458)-SghuTSDR-8
Plasmid#129048Purposeinactivated control (targeted DNA demethylation_human_TSDR), expression of dCas9-hudTET1CD-T2A-mCherry sgRNA8 targeting human TSDRDepositorInsertdCas9-hudTET1CD, SgRNA8 (huTSDR)
TagsHA-Tag, NLS and T2A-mCherryExpressionMammalianMutationdCas9 (D10A;H840A), catalytic domain huTET1 inact…PromoterCbH (for dCas9-hudTET1CD-T2A-EGFP) U6 (for sgRNA)Available SinceJan. 25, 2021AvailabilityAcademic Institutions and Nonprofits only -
pSpdCas9-hudTET1CD-T2A-mCherry(PX458)-SghuTSDR-1
Plasmid#129041Purposeinactivated control (targeted DNA demethylation_human_TSDR), expression of dCas9-hudTET1CD-T2A-mCherry sgRNA1 targeting human TSDRDepositorInsertdCas9-hudTET1CD, SgRNA1 (huTSDR)
TagsHA-Tag, NLS and T2A-mCherryExpressionMammalianMutationdCas9 (D10A;H840A), catalytic domain huTET1 inact…PromoterCbH (for dCas9-hudTET1CD-T2A-EGFP) U6 (for sgRNA)Available SinceJan. 25, 2021AvailabilityAcademic Institutions and Nonprofits only -
pSpdCas9-huTET1CD-T2A-mCherry(PX458)-SghuTSDR-8
Plasmid#129036Purposetargeted DNA demethylation_human_TSDR, expression of dCas9-huTET1CD-T2A-mCherry and sgRNA8 targeting human TSDRDepositorInsertdCas9-huTET1CD, SgRNA8 (huTSDR)
TagsHA-Tag, NLS and T2A-mCherryExpressionMammalianMutationdCas9 (D10A;H840A)PromoterCbH (for dCas9-huTET1CD-T2A-EGFP) U6 (for sgRNA)Available SinceJan. 25, 2021AvailabilityAcademic Institutions and Nonprofits only -
pSUPER-retro-puro-tetO-Mek1-shRNA
Plasmid#53179PurposeExpresses shRNA against mouse Mek1 from puromycin resistance retroviral vectorDepositorAvailable SinceJune 19, 2014AvailabilityAcademic Institutions and Nonprofits only -
pSpdCas9-huTET1CD-T2A-mCherry(PX458)-SgmouseTSDR-1
Plasmid#129053Purposetargeted DNA demethylation_mouse_TSDR, expression of dCas9-huTET1CD-T2A-mCherry and sgRNA1 targeting mouse TSDRDepositorInsertdCas9-huTET1CD, SgRNA1 (mouseTSDR)
TagsHA-Tag, NLS and T2A-mCherryExpressionMammalianMutationdCas9 (D10A;H840A)PromoterCbH (for dCas9-huTET1CD-T2A-EGFP) U6 (for sgRNA)Available SinceJan. 25, 2021AvailabilityAcademic Institutions and Nonprofits only -
pBEST-PLlacO-1-UTR1-TetR-YbaQ-T500
Plasmid#45778DepositorInsertTetracycline repressor
UseSynthetic BiologyTagsYbaQ degradation tagExpressionBacterialPromoterPLlacO-1Available SinceJuly 19, 2013AvailabilityAcademic Institutions and Nonprofits only -
pSpdCas9-huTET1CD-T2A-mCherry(PX458)-SghuTSDR-1
Plasmid#129029Purposetargeted DNA demethylation_human_TSDR, expression of dCas9-huTET1CD-T2A-mCherry and sgRNA1 targeting human TSDRDepositorInsertdCas9-huTET1CD, SgRNA1 (huTSDR)
TagsHA-Tag, NLS and T2A-mCherryExpressionMammalianMutationdCas9 (D10A;H840A)PromoterCbH (for dCas9-huTET1CD-T2A-EGFP) U6 (for sgRNA)Available SinceJan. 25, 2021AvailabilityAcademic Institutions and Nonprofits only -
GB1-His-TET1-878-911(pL91)
Plasmid#124390PurposeE.Coli produced TET1 SID (TET1-878-911) purified by FPLC nickel columnDepositorAvailable SinceMay 23, 2019AvailabilityAcademic Institutions and Nonprofits only -
pcDNA4-Tet-on-vsv-Mis12-dCEN Incenp
Plasmid#108482Purposeinducible expression of vsv-Mis12-dCEN-INCENPDepositorInsertMis12-dCEN-INCENP (INCENP Human)
TagsVSVExpressionMammalianMutationCEN box replaced by Mis12PromoterCMVAvailable SinceMay 8, 2018AvailabilityAcademic Institutions and Nonprofits only -
pBEST-PLtetO-1-UTR1-LacI-YbaQ-T500
Plasmid#45776DepositorInsertLac repressor
UseSynthetic BiologyTagsYbaQ degradation tagExpressionBacterialPromoterPLtetO-1Available SinceAug. 22, 2013AvailabilityAcademic Institutions and Nonprofits only -
pFA6a-kanMX-tetO-Pcyc1-GST-LINKER
Plasmid#52688PurposeSame as 41026, with additional linkerDepositorInserttetO7-Pcyc1-GST+LINKER
UsePromoter replacementExpressionYeastAvailable SinceApril 30, 2014AvailabilityAcademic Institutions and Nonprofits only -
(203-bp-TET-DIAL-YB-TATA)-mGL-bGH_pKG3015
Plasmid#246358Purpose203-bp TET-DIAL Reporter Plasmid with YB_TATA expressing mGreenLantern in the presence of DOX and rtTA and editable by Cre recombinaseDepositorInsertmGreenLantern
UseSynthetic BiologyExpressionMammalianMutationnoneAvailable SinceNov. 18, 2025AvailabilityAcademic Institutions and Nonprofits only -
(loxPcon-TET-DIAL-YB-TATA)-mGL-bGH_pKG3016
Plasmid#246359PurposeloxPcon DIAL Reporter Plasmid with YB_TATA expressing mGreenLantern in the presence of DOX and rtTA and editable by Cre recombinaseDepositorInsertmGreenLantern
UseSynthetic BiologyExpressionMammalianMutationnoneAvailable SinceNov. 18, 2025AvailabilityAcademic Institutions and Nonprofits only -
(90-bp-TET-DIAL-YB-TATA-VloxP)-mGL-bGH_pKG3017
Plasmid#246360Purpose90-bp DIAL Reporter Plasmid with YB_TATA expressing mGreenLantern in the presence of DOX and rtTA and editable by VCre recombinaseDepositorInsertmGreenLantern
UseSynthetic BiologyExpressionMammalianMutationnoneAvailable SinceNov. 18, 2025AvailabilityAcademic Institutions and Nonprofits only -
(610-bp-TET-DIAL-YB-TATA)-mGL-bGH_pKG3263
Plasmid#246362Purpose610-bp DIAL Reporter Plasmid with YB_TATA expressing mGreenLantern in the presence of DOX and rtTA and editable by Cre recombinaseDepositorInsertmGreenLantern
UseSynthetic BiologyExpressionMammalianMutationnoneAvailable SinceNov. 18, 2025AvailabilityAcademic Institutions and Nonprofits only -
(203-bp-TET-DIAL-minCMV)-mGL-bGH_pDA028
Plasmid#246363Purpose203-bp DIAL Reporter Plasmid with minCMV expressing mGreenLantern in the presence of DOX and rtTA and editable by Cre recombinaseDepositorInsertmGreenLantern
UseSynthetic BiologyExpressionMammalianMutationnoneAvailable SinceNov. 18, 2025AvailabilityAcademic Institutions and Nonprofits only -
(203-bp-TET-DIAL-minSV40)-mGL-bGH_pDA030
Plasmid#246364Purpose203-bp DIAL Reporter Plasmid with minSV40 expressing mGreenLantern in the presence of DOX and rtTA and editable by Cre recombinaseDepositorInsertmGreenLantern
UseSynthetic BiologyExpressionMammalianMutationnoneAvailable SinceNov. 18, 2025AvailabilityAcademic Institutions and Nonprofits only -
(203-bp-TET-DIAL-CMV53)-mGL-bGH_pDA046
Plasmid#246365Purpose203-bp DIAL Reporter Plasmid with CMV53 expressing mGreenLantern in the presence of DOX and rtTA and editable by Cre recombinaseDepositorInsertmGreenLantern
UseSynthetic BiologyExpressionMammalianMutationnoneAvailable SinceNov. 18, 2025AvailabilityAcademic Institutions and Nonprofits only -
(203-bp-TET-DIAL-MLP)-mGL-bGH_pDA047
Plasmid#246366Purpose203-bp DIAL Reporter Plasmid with MLP expressing mGreenLantern in the presence of DOX and rtTA and editable by Cre recombinaseDepositorInsertmGreenLantern
UseSynthetic BiologyExpressionMammalianMutationnoneAvailable SinceNov. 18, 2025AvailabilityAcademic Institutions and Nonprofits only -
CIRC-V1-Tet-CVB3 IRES-EGFP-BbsI
Plasmid#246756PurposeRNA circularization with CIRC using Tet intron, harbouring an CVB3 IRES-EGFP reporter.Plasmid was linearized with BbsI.DepositorInsertCIRC-V1-Tet-CVB3 IRES-EGFP-BbsI
UseSynthetic BiologyAvailable SinceNov. 4, 2025AvailabilityAcademic Institutions and Nonprofits only -
(829) SB Tet-ON dCasphi-[myc-ZIM3-HA] U6-gStop
Plasmid#195622PurposeSleeping Beauty Tet-ON plasmid for induced expression of dCasphi-ZIM3 CRISPRi constructDepositorInsertdCasphi
TagsC-Myc (NLS), HA tag, and ZIM3ExpressionMammalianMutationP749A and P753APromoterTight TRE promoter; Tet-ON (doxycycline)Available SinceJuly 1, 2025AvailabilityAcademic Institutions and Nonprofits only -
pXTK-BB4 [Backbone_repABC-pMlb-KanR-TetR_PartTypeBB]
Plasmid#229390PurposeXanthoMoClo Golden Gate Backbone Plasmid, contains Backbone_repABC-pMlb-KanR-TetR_PartTypeBB and an sfGFP dropoutDepositorTypeEmpty backboneExpressionBacterialAvailable SinceMay 20, 2025AvailabilityAcademic Institutions and Nonprofits only -
pHAGE2-TetO-Chim-Pchi-Q61A/E64M
Plasmid#231521PurposeExpresses Pigoraptor chileana chimeric Sox mutant in mammalian cells, for lentivirus generationDepositorInsertPchi HMG Q61A/E64M flanked with N- and C-termini of mSox2
UseLentiviralMutationPoint mutations at position 61 Q to A and 64 E to…Available SinceMarch 14, 2025AvailabilityAcademic Institutions and Nonprofits only -
PTet-F30-Pepper aptamer-UTR1-mTurq2
Plasmid#227645PurposepTet-driven expression of F30-scaffolded Pepper aptamer and mTurquoise2 for quantifying cell-free RNA and protein synthesis. The mTurq2 has a GGGGS linker followed by a His6x tag.DepositorInsertF30-scaffolded Pepper aptamer and mTurquoise2 (codon optimized for E. coli B using IDT Codon Optimizer)
UseSynthetic BiologyAvailable SinceNov. 14, 2024AvailabilityAcademic Institutions and Nonprofits only -
PtetA-PLacO3O1 150 bp with pBELO_L6-PT3-T4_CAMR_TAN+
Plasmid#225645PurposetetA and LacO3O1 promoters in tandem conformation with 150bp distance between them, expressing mCherry with pBELO_L6-PT3-T4 backbone and chloramphenicol resistanceDepositorInserttetR/tetA and LacO3O1 in tandem conformation
TagsmCherryExpressionBacterialPromotertetA and LacO3O1 promotersAvailable SinceOct. 15, 2024AvailabilityAcademic Institutions and Nonprofits only -
PLacO3O1-PtetA 250 bp with pBELO_L6-PT3-T4_CAMR_TAN+
Plasmid#225648PurposeLacO3O1 and tetA promoters in tandem conformation with 250bp distance between them, expressing mCherry with pBELO_L6-PT3-T4 backbone and chloramphenicol resistanceDepositorInsertLacO3O1 and tetR/tetA in tandem conformation
TagsmCherryExpressionBacterialPromoterLacO3O1 and tetA promotersAvailable SinceOct. 11, 2024AvailabilityAcademic Institutions and Nonprofits only -
PLacO3O1-PtetA 150 bp with pBELO_L6-PT3-T4_CAMR_TAN+
Plasmid#225647PurposeLacO3O1 and tetA promoters in tandem conformation with 150bp distance between them, expressing mCherry with pBELO_L6-PT3-T4 backbone and chloramphenicol resistanceDepositorInsertLacO3O1 and tetR/tetA in tandem conformation
TagsmCherryExpressionBacterialPromoterLacO3O1 and tetA promotersAvailable SinceOct. 11, 2024AvailabilityAcademic Institutions and Nonprofits only -
PtetA-PLacO3O1 350 bp with pBELO_L6-PT3-T4_CAMR_TAN+
Plasmid#225646PurposetetA and LacO3O1 promoters in tandem conformation with 350bp distance between them, expressing mCherry with pBELO_L6-PT3-T4 backbone and chloramphenicol resistanceDepositorInserttetR/tetA and LacO3O1 in tandem conformation
TagsmCherryExpressionBacterialPromotertetA and LacO3O1 promotersAvailable SinceOct. 11, 2024AvailabilityAcademic Institutions and Nonprofits only -
DRD2-V2tail-TevN-BLITz-TetR-FKBP
Plasmid#210514Purposeexpresses DRD2-V2tail-TevN-BLITz-TetR-FKBP component in mammalian cellsDepositorInsertDRD2-V2tail-TevN-BLITz-TetR-FKBP
TagsHA signal FALGExpressionMammalianPromoterCMVAvailable SinceJan. 26, 2024AvailabilityAcademic Institutions and Nonprofits only -
pHR-flag-Lag16-fibcon-iCAM1-tether
Plasmid#205213PurposeThis vector encodes of the synCAM tether (fibcon - iCAM1) and GFP nanobody LAG16DepositorInsertsynCAM fibcon - iCAM1 Tether and Lag16 anti-GFP nanobody
UseLentiviralExpressionMammalianAvailable SinceAug. 22, 2023AvailabilityAcademic Institutions and Nonprofits only -
pRetroX-TetOne-Puro-p62 K7A/D69A
Plasmid#204549PurposeExpresses p62 K7A/D69A in a doxycycline-dependent manner in mammalian cellsDepositorAvailable SinceAug. 10, 2023AvailabilityAcademic Institutions and Nonprofits only -
pSBtet-Bla-dCas9-KRAB-MeCP2_hU6-A10
Plasmid#196081PurposeInducible CRISPRi vector conferring blasticidin S resistance, expressing gRNA targeting mouse Adam10.DepositorInsertgRNA targeting Adam10
UseCRISPRExpressionMammalianMutationCloned using SapI sites - destroyed after inserti…Available SinceMarch 30, 2023AvailabilityAcademic Institutions and Nonprofits only -
pSBtet-Hyg-dCas9-KRAB-MeCP2_hU6-A10
Plasmid#196083PurposeInducible CRISPRi vector conferring hygromycin B resistance, expressing gRNA targeting mouse Adam10.DepositorInsertgRNA targeting Adam10
UseCRISPRExpressionMammalianMutationCloned using SapI sites - destroyed after inserti…Available SinceMarch 30, 2023AvailabilityAcademic Institutions and Nonprofits only -
Tet-Inducible Mouse C325A Caspase-9 Mutant
Plasmid#194500PurposeInducible Expression of Mouse C325A Caspase-9 MutantDepositorInsertMouse Caspase-9 C325A Mutant (Casp9 Mouse)
TagsNoneExpressionMammalianMutationChanged Cysteine 325 to Alanine to eliminate prot…PromoterCMVAvailable SinceFeb. 27, 2023AvailabilityAcademic Institutions and Nonprofits only -
Tet-inducible 3xFlag Mouse Caspase-9 ΔLS
Plasmid#194609PurposeInducible Expression of N-Terminal 3X Flag Mouse Caspase-9 Minus Large Subunit DomainDepositorInsertN-Terminal 3X Flag Mouse Caspase-9 Minus Sequence Encoding Val 177 to Asp 353 (Casp9 Mouse)
Tags3X FlagExpressionMammalianMutationDeletion of Large Subunit Domain eliminates bindi…PromoterCMVAvailable SinceFeb. 17, 2023AvailabilityAcademic Institutions and Nonprofits only -
Tet-inducible 3xFlag Mouse C325A Caspase-9 ΔA LS
Plasmid#194926PurposeInducible Expression of N-Terminal 3X Flag Mouse C325A Caspase-9 Minus Large Subunit Region Val 177 to Arg 263DepositorInsertN-Terminal 3X Flag Mouse C325A Caspase-9 Minus Sequence Encoding Val 177 to Arg 263 (Casp9 Mouse)
Tags3X FlagExpressionMammalianMutationChanged Cysteine 325 to Alanine to Eliminate Prot…PromoterCMVAvailable SinceFeb. 17, 2023AvailabilityAcademic Institutions and Nonprofits only -
NAT-TET-OFF – ubiquitin – LEU – 4MYC
Plasmid#193314PurposeDoxycycline-induced transcriptional regulation and Ubiquitin - LEU - 4xMYC N-terminal tagging. Ubiquitin is cleaved off, resulting in an unstable protein with an N-terminal leucine.DepositorInsertUbiquitin - Leucine - 4MYC N-terminal tagging
Tags4MYCExpressionBacterialAvailable SinceJan. 26, 2023AvailabilityAcademic Institutions and Nonprofits only -
HYG-TET-OFF – ubiquitin – LEU – 4MYC
Plasmid#193316PurposeDoxycycline-induced transcriptional regulation and Ubiquitin - LEU - 4xMYC N-terminal tagging. Ubiquitin is cleaved off, resulting in an unstable protein with an N-terminal leucine.DepositorInsertUbiquitin - Leucine - 4MYC N-terminal tagging
Tags4MYCExpressionBacterialAvailable SinceJan. 26, 2023AvailabilityAcademic Institutions and Nonprofits only -
pVH266-Tier1-OTetO7-PCMVmin2-SEAP-sTRSV
Plasmid#169589PurposeTier-1 vector encoding PTetO7-driven SEAP expression with a 3'UTR sTRSV ribozyme (OTetO7-PCMVmin-2-SEAP-3'UTRsTRSV-pA).DepositorInserttetracycline-controlled SEAP expression
ExpressionMammalianPromoterTetO7-PCMVmin-2Available SinceJuly 7, 2022AvailabilityAcademic Institutions and Nonprofits only -
pVH267-Tier1-OTetO7-PCMVmin2-SEAP-env140
Plasmid#169590PurposeTier-1 vector encoding PTetO7-driven SEAP expression with a 3'UTR env140 ribozyme (OTetO7-PCMVmin-2-SEAP-3'UTRenv140-pA).DepositorInserttetracycline-controlled SEAP expression
ExpressionMammalianPromoterTetO7-PCMVmin-2Available SinceJune 22, 2022AvailabilityAcademic Institutions and Nonprofits only -
Direct-seq_lentiGuide-Puro-Tetra Loop-8A8G
Plasmid#157982PurposeExpresses programmed gRNA scaffold from U6 promoter. Programmed gRNA scaffold for streamlined scRNA-seq in CRISPR screen (Direct-seq). 3rd generation lentiviral backbone.DepositorInsertS. pyogenes sgRNA cassette (Tetra-8A8G)
UseCRISPR and LentiviralExpressionMammalianPromoterhU6Available SinceMay 10, 2021AvailabilityAcademic Institutions and Nonprofits only -
pSpdCas9-huTET1CD-T2A-mCherry(PX458)-SgmouseTSDR-9
Plasmid#129061Purposetargeted DNA demethylation_mouse_TSDR, expression of dCas9-huTET1CD-T2A-mCherry and sgRNA9 targeting mouse TSDRDepositorInsertdCas9-huTET1CD, SgRNA9 (mouseTSDR)
TagsHA-Tag, NLS and T2A-mCherryExpressionMammalianMutationdCas9 (D10A;H840A)PromoterCbH (for dCas9-huTET1CD-T2A-EGFP) U6 (for sgRNA)Available SinceJan. 25, 2021AvailabilityAcademic Institutions and Nonprofits only -
pSpdCas9-huTET1CD-T2A-mCherry(PX458)-SgmouseTSDR-10
Plasmid#129062Purposetargeted DNA demethylation_mouse_TSDR, expression of dCas9-huTET1CD-T2A-mCherry and sgRNA10 targeting mouse TSDRDepositorInsertdCas9-huTET1CD, SgRNA10 (mouseTSDR)
TagsHA-Tag, NLS and T2A-mCherryExpressionMammalianMutationdCas9 (D10A;H840A)PromoterCbH (for dCas9-huTET1CD-T2A-EGFP) U6 (for sgRNA)Available SinceJan. 25, 2021AvailabilityAcademic Institutions and Nonprofits only -
pSpdCas9-huTET1CD-T2A-mCherry(PX458)-SgmouseTSDR-11
Plasmid#129063Purposetargeted DNA demethylation_mouse_TSDR, expression of dCas9-huTET1CD-T2A-mCherry and sgRNA11 targeting mouse TSDRDepositorInsertdCas9-huTET1CD, SgRNA11 (mouseTSDR)
TagsHA-Tag, NLS and T2A-mCherryExpressionMammalianMutationdCas9 (D10A;H840A)PromoterCbH (for dCas9-huTET1CD-T2A-EGFP) U6 (for sgRNA)Available SinceJan. 25, 2021AvailabilityAcademic Institutions and Nonprofits only -
pSpdCas9-huTET1CD-T2A-mCherry(PX458)-SgmouseTSDR-12
Plasmid#129064Purposetargeted DNA demethylation_mouse_TSDR, expression of dCas9-huTET1CD-T2A-mCherry and sgRNA12 targeting mouse TSDRDepositorInsertdCas9-huTET1CD, SgRNA12 (mouseTSDR)
TagsHA-Tag, NLS and T2A-mCherryExpressionMammalianMutationdCas9 (D10A;H840A)PromoterCbH (for dCas9-huTET1CD-T2A-EGFP) U6 (for sgRNA)Available SinceJan. 25, 2021AvailabilityAcademic Institutions and Nonprofits only -
pSpdCas9-huTET1CD-T2A-mCherry(PX458)-SgmouseTSDR-2
Plasmid#129054Purposetargeted DNA demethylation_mouse_TSDR, expression of dCas9-huTET1CD-T2A-mCherry and sgRNA2 targeting mouse TSDRDepositorInsertdCas9-huTET1CD, SgRNA2 (mouseTSDR)
TagsHA-Tag, NLS and T2A-mCherryExpressionMammalianMutationdCas9 (D10A;H840A)PromoterCbH (for dCas9-huTET1CD-T2A-EGFP) U6 (for sgRNA)Available SinceJan. 25, 2021AvailabilityAcademic Institutions and Nonprofits only