| Name | Progesterone-induced-blocking factor 1 |
| Description | Mediator of progesterone that by acting on the phospholipase A2 enzyme interferes with arachidonic acid metabolism, induces a Th2 biased immune response, and by controlling NK activity exerts an anti-abortive effect. |
| UniProt ID | Q8WXW3 |
| Gene | PIBF1 |