Editing Colostrum (section)

=== Proline-rich polypeptides ===
Proline-rich polypeptides (PRPs) are small immune signaling peptides that were independently discovered in colostrum and other sources, such as blood plasma, in the United States, Czechoslovakia and Poland.<ref name="Janusz_2010">{{cite journal | vauthors = Janusz M, Zabłocka A | title = Colostral proline-rich polypeptides--immunoregulatory properties and prospects of therapeutic use in Alzheimer's disease | journal = Current Alzheimer Research | volume = 7 | issue = 4 | pages = 323–333 | date = June 2010 | pmid = 19939229 | doi = 10.2174/156720510791162377 | department = Review }}</ref> Hence they appear under various names in the literature, including [[Colostrinin]], CLN, transfer factor and PRP. They function as signal transducing molecules that accelerate the maturation of cells of the immune system.<ref name="pmid18183932">{{cite book |doi=10.1007/978-0-387-74087-4_9 |chapter=A Proline-Rich Polypeptide from Ovine Colostrum: Colostrinin with Immunomodulatory Activity |title=Bioactive Components of Milk |series=Advances in Experimental Medicine and Biology |year=2008 | vauthors = Zimecki M |volume=606 |pages=241–250 |pmid=18183932 |isbn=978-0-387-74086-7 | department = Review }}</ref>