| Prolactin | 25.876 | UniProtKB |
| Proheparin-binding EGF-like growth factor | 23.067 | UniProtKB |
| Progranulin | 63.544 | UniProtKB |
| Progesterone-induced-blocking factor 1 | 89.805 | UniProtKB |
| Progesterone | 0.3145 | UniProtKB |
| Pro-epidermal growth factor | 133.994 | UniProtKB |
| Pro-adrenomedullin | 20.42 | UniProtKB |
| Prasterone | 0.2884 | UniProtKB |
| Poly I:C | 8635.5 | 19438974 |
| PMA | 0.61683 | 1545152 |
