Despite a small modicum of successes,<unk>  generated from human blood (human-derived), cow spleen (bovine-derived), or mouse spleen (murine derived) is not in routine clinical use today. A trial investigating its ability to immunize children with leukemia against shingles showed promise in a small number of patients, but represents only one of two placebo-controlled studies. Instead,<unk> s derived from cow colostrum and/or chicken eggs yolks are used predominantly today.
Transfer factor
Hemostat
Coagulase
Fibrinolysin
Intrinsic factor
Serpin
Phototoxin
Hemotoxin