Deep Dive: Fixing and Permeabilizing for Immunofluorescence
Type
Blog Post
Published
Aug. 30, 2022, 1:15 p.m.
... of permeabilization and membrane integrity (Fig. 2). For example, saponin interacts with cholesterol ... at too high a concentration.
Figure 2: Examples of different permeabilization strategies... but it’s really just formaldehyde.
Formalin: You may also come across formalin, which refers to a saturated...cause some confusion.
Paraformaldehyde: Many IF protocols call for paraformaldehyde (PFA) as the fixative...saturated solution of formaldehyde (saturated being 37%). Formalin solutions often contain methanol as ...order to slow the polymerization of formaldehyde.
Note: Formaldehyde in solution will naturally polymerize... maintaining cellular and tissue morphology. Formaldehyde is the most commonly used cross-linker for IF...