A dual purpose tissue fixative is described. The fixative comprises a cross-linking aldehyde, alcohol, a chelating agent and a non-amine buffer. More particularly, the tissue fixative comprises 0.1-2% w/v formaldehyde, 45-90% w/w alcohol, 1-10 mM of a chelating agent and 1-50 mM of a non-nitrogen buffer....http://www.google.fr/patents/US5976829?utm_source=gb-gplus-shareBrevet US5976829 - Dual purpose tissue fixative