Update to definition for EFO_0000635

[sherinpumc]

The definition for EFO_0000635 is "The part of organism's anatomy or substance arising from an organism from which the biomaterial was derived, excludes cells. E.g. tissue, organ, system, sperm, blood or body location (arm)."

Sperm is A mature male germ cell that develops from a spermatid. (http://purl.obolibrary.org/obo/CL_0000019)

Thanks