Colostrum contains proline-rich peptides (PRPs) that can bidirectionally modulate the immune system.

“this is discussing proline rich peptides prps these endogenously in our bodies stimulate immature thymocytes to turn into functionally active t cells you've all heard me talk about the thymus which is in our histamine and immune supplement high in vitamin c for an animal organ in fact high in vitamin c in general and that's where your t cells mature prp is involved in that proline rich peptides so again this prp is an immunoregulator and found in the colostrum it's going to really affect our immune system probably in a positive way in humans”