| Podophyllotoxin Derivatives | Not Available | 2 | 25 | Details |
| Podophyllum | Not Available | 1 | 0 | Details |
| Poisons | Substances which, when ingested, inhaled, or absorbed, or when applied to, injected int... more | 6 | 6 | Details |
| Poliovirus Vaccine | Not Available | 0 | 0 | Details |
| Pollen | Not Available | 0 | 0 | Details |
| Poly (ADP-ribose) polymerase (PARP) inhibitors | Not Available | 6 | 50 | Details |
| Poly C | A group of cytosine ribonucleotides in which the phosphate residues of each cytosine ri... more | 2 | 0 | Details |
| Poly I | A group of inosine ribonucleotides in which the phosphate residues of each inosine ribo... more | 2 | 0 | Details |
| Poly I-C | Not Available | 0 | 0 | Details |
| Poly(ADP-ribose) Polymerase Inhibitors | Chemicals and drugs that inhibit the action of POLY(ADP-RIBOSE)POLYMERASES. | 11 | 69 | Details |
| Poly(ADP-ribose) Polymerases, antagonists & inhibitors | Not Available | 1 | 0 | Details |
| Poly-ADP-Ribose Binding Proteins | Proteins that contain POLY-ADP RIBOSE BINDING MOTIFS. They include HISTONES and other p... more | 1 | 0 | Details |
| Polyamines | Amine compounds that consist of carbon chains or rings containing two or more primary a... more | 52 | 95 | Details |
| Polycyclic Sesquiterpenes | Sesquiterpenes that contain two or more ring structures | 2 | 0 | Details |
| Polydeoxyribonucleotides | A group of 13 or more deoxyribonucleotides in which the phosphate residues of each deox... more | 0 | 0 | Details |
| Polyene Antifungal | Polyene antifungal/antimycotic agents are named for their conjugated double bond struct... more | 3 | 5 | Details |
| Polyene Antimicrobial | Not Available | 1 | 1 | Details |
| Polyenes | Hydrocarbons with more than one double bond. They are a reduced form of POLYYNES. | 44 | 141 | Details |
| Polyesters | Polymers of organic acids and alcohols, with ester linkages--usually polyethylene terep... more | 2 | 0 | Details |
| Polyether Polyketides | Polycyclic polyketides with distinctive ladder shaped multiple polyether motifs. In STR... more | 5 | 11 | Details |
| Polyether Toxins | Polycyclic polyether polyketides most often produced by marine organisms, e.g., DINOFLA... more | 1 | 10 | Details |
| Polyethylene Glycols | Polymers of ETHYLENE OXIDE and water, and their ethers. They vary in consistency from l... more | 14 | 7 | Details |
| Polygalaceae | A plant family of the order Polygalales, subclass Rosidae, class Magnoliopsida. | 1 | 0 | Details |
| Polyketides | Natural compounds containing alternating carbonyl and methylene groups (beta-polyketone... more | 60 | 148 | Details |
| Polymerase Acidic Endonuclease Inhibitors | Not Available | 2 | 7 | Details |