Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Influence of proteinase K concentration as seen in stomach tissue of a snake infected with Cryptosporidium serpentis. In situ hybridization was performed after 71 weeks of prolonged formalin fixation. Parasites are stained dark purple. a, standard proteinase K concentration, b, double proteinase K concentration, c, 4-fold proteinase K concentration. Bar = 400 μm.
