a pigment formed when acid aqueous solutions of formaldehyde act on blood-rich tissues; characterized by rotation of the plane of polarized light, withstanding extraction in aqueous and lipid solvents, being bleached in acids and hydrogen peroxide; not formed when tissue is fixed with formaldehyde buffered to pH levels higher than 6.
Farlex Partner Medical Dictionary © Farlex 2012
for·ma·lin pig·ment(fōr'mă-lin pig'mĕnt)
A pigment formed when acid aqueous solutions of formaldehyde act on blood-rich tissues.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012