| P P P P P | letter |
| Pandemic | chapter 15 | micro 509 | heading |
| Parasite | chapter 11 | micro 509 | heading |
| Parasites | chapter 11 | micro 509 | heading |
| Parasites, obligate, intracellular | chapter 10 | micro 509 | heading |
| Parasitic protists | chapter 11 | micro 509 | heading |
| Parasitism | chapter 14 | micro 509 | heading |
| Parfocal | chapter 3 | micro 509 | heading |
| Passive immunity | chapter 17 | micro 509 | heading |
| Pasteur, Louis | chapter 1 | micro 509 | heading |
| Pasteurella | chapter 9 | micro 509 | heading |
| Pasteurella (wave) | supplement | micro 509 | wave |
| Pasteurization | chapter 12 | micro 509 | heading |
| Pathogen | chapter 11 | micro 509 | heading |
| Pathogenicity | chapter 14 | micro 509 | heading |
| PCR | chapter 8 | micro 509 | heading |
| Penetration (virus) | chapter 10 | micro 509 | heading |
| Period of illness | chapter 14 | micro 509 | heading |
| Period, convalescence | chapter 14 | micro 509 | heading |
| Period, incubation | chapter 14 | micro 509 | heading |
| Period, prodromal | chapter 14 | micro 509 | heading |
| Periplasm | chapter 4 | micro 509 | heading |
| Periplasmic enzymes | chapter 6 | micro 509 | heading |
| Periplasmic space | chapter 4 | micro 509 | heading |
| Peritrichous | chapter 4 | micro 509 | heading |
| pH | chapter 2 | micro 509 | heading |
| pH | chapter 6 | micro 509 | heading |
| pH optimum | chapter 6 | micro 509 | heading |
| Phage growth (replication) curve | chapter 10 | micro 509 | heading |
| Phage T4 replication | chapter 10 | micro 509 | heading |
| Phage typing | chapter 9 | micro 509 | heading |
| Phage, temperate | chapter 10 | micro 509 | heading |
| Phage-induced lysis | chapter 10 | micro 509 | heading |
| Phages | chapter 10 | micro 509 | heading |
| Phagocytes | chapter 16 | micro 509 | heading |
| Phagocytosis | chapter 16 | micro 509 | heading |
| Phagolysoosome | chapter 16 | micro 509 | heading |
| Phagosome | chapter 16 | micro 509 | heading |
| Phase, death | chapter 6 | micro 509 | heading |
| Phase, decline | chapter 6 | micro 509 | heading |
| Phase, decline | chapter 14 | micro 509 | heading |
| Phase, invasive | chapter 14 | micro 509 | heading |
| Phase, lag | chapter 6 | micro 509 | heading |
| Phase, log | chapter 6 | micro 509 | heading |
| Phase, stationary | chapter 6 | micro 509 | heading |
| Phase-contrast microscopy | chapter 3 | micro 509 | heading |
| Phenol | chapter 12 | micro 509 | heading |
| Phenol coefficient | chapter 12 | micro 509 | heading |
| Phenol derivatives | chapter 12 | micro 509 | heading |
| Phenolics | chapter 12 | micro 509 | heading |
| Phospholipids | chapter 2 | micro 509 | heading |
| Phosphorous | chapter 6 | micro 509 | heading |
| Photoautotroph | chapter 5 | micro 509 | heading |
| Photoheterotroph | chapter 5 | micro 509 | heading |
| Phototaxis | chapter 4 | micro 509 | heading |
| Physical barriers | chapter 16 | micro 509 | heading |
| Pili | chapter 4 | micro 509 | heading |
| Pimple | chapter 16 | micro 509 | heading |
| Plaque assay | chapter 10 | micro 509 | heading |
| Plasma cells | chapter 17 | micro 509 | heading |
| Plasma membrane | chapter 4 | micro 509 | heading |
| Plasmids | chapter 8 | micro 509 | heading |
| Plasmids, resistance | chapter 8 | micro 509 | heading |
| Plasmolysis | chapter 6 | micro 509 | heading |
| Plate count, heterotrophic | chapter 6 | micro 509 | heading |
| Plate count, standard | chapter 6 | micro 509 | heading |
| Pleomorphic | chapter 4 | micro 509 | heading |
| Polar compound | chapter 2 | micro 509 | heading |
| Polar covalent bond | chapter 2 | micro 509 | heading |
| Poliomyelitis vaccines | chapter 17 | micro 509 | heading |
| Polymerase chain reaction | chapter 8 | micro 509 | heading |
| Polysaccharides | chapter 2 | micro 509 | heading |
| Portal of exit | chapter 15 | micro 509 | heading |
| Portals of entry | chapter 15 | micro 509 | heading |
| Pour plate | chapter 6 | micro 509 | heading |
| Precautions, universal | chapter 15 | micro 509 | heading |
| Preservation, microbial | chapter 12 | micro 509 | heading |
| Prevalence | chapter 15 | micro 509 | heading |
| Preventing nosocomial infections | chapter 15 | micro 509 | heading |
| Primary infection | chapter 14 | micro 509 | heading |
| Primary response | chapter 17 | micro 509 | heading |
| Procurement of carbon | chapter 5 | micro 509 | heading |
| Procurement of energy | chapter 5 | micro 509 | heading |
| Prodromal period | chapter 14 | micro 509 | heading |
| Profile, protein | chapter 9 | micro 509 | heading |
| Prokaryotes | chapter 4 | micro 509 | heading |
| Prokaryotes, size of | chapter 4 | micro 509 | heading |
| Propagated epidemic | chapter 15 | micro 509 | heading |
| Prophage | chapter 10 | micro 509 | heading |
| Prophylaxis | chapter 18 | micro 509 | heading |
| Protein profile | chapter 9 | micro 509 | heading |
| Proteins | chapter 2 | micro 509 | heading |
| Protein-synthesis inhibition | chapter 13 | micro 509 | heading |
| Proteus | chapter 9 | micro 509 | heading |
| Proteus vulgaris | chapter 9 | micro 509 | heading |
| Proteus vulgaris (wave) | supplement | micro 509 | wave |
| Protista, kingdom | chapter 9 | micro 509 | heading |
| Protists | chapter 11 | micro 509 | heading |
| Protists, parasitic | chapter 11 | micro 509 | heading |
| Protoplast | chapter 4 | micro 509 | heading |
| Prototroph | chapter 7 | micro 509 | heading |
| Protozoa (introduction) | chapter 1 | micro 509 | heading |
| Pseudomonas | chapter 9 | micro 509 | heading |
| Pseudomonas aeruginosa | chapter 9 | micro 509 | heading |
| Pseudomonas aeruginosa (wave) | supplement | micro 509 | wave |
| Psychrophile | chapter 6 | micro 509 | heading |
| Pus | chapter 16 | micro 509 | heading |
| Pyrogen | chapter 16 | micro 509 | heading |