An enzyme called rennin exists in the gastric juice of the human stomach also.
"School and Home Cooking"
Carlotta C. Greer
This action is due to the rennin.
"Physiology and Hygiene for Secondary Schools"
Francis M. Walters, A.M.
rennin and crie as thou were wode.
"The Grammar of English Grammars"
Goold Brown