Following, this question -
What do I know is-
Rennin is found in calves and acts on milk to curdle it.
Pepsin acts as rennin at pH of 6-6.5 and curdles milk.
Humans have pepsin, in infants as well as adults. Pepsin can perform both functions in humans.
So, in infants, is curdling of milk done by rennin or the rennin like activity of pepsin?