The proteins in cow's milk are different from human milk proteins and cause problems of digestion, intolerance, impaired absorption of other nutrients, and autoimmune reactions. (babyreference.com)
Through consumption of concentrated human milk protein, in the form of a human milk fortifier from 100 % human milk by Prolacta Bioscience, critically ill preemies are able to get the nutrition they need to grow while being fed exclusively human milk. (helpinghandsbank.com)
In fact, they do not even take into account the fact that human infants more easily assimilate human milk proteins than cow milk proteins. (babyreference.com)