| A A A A A | letter |
| Abscess | chapter 16 | micro 509 | heading |
| Acceptor, electron | chapter 5 | micro 509 | heading |
| Acid-fast stain | chapter 3 | micro 509 | heading |
| Acidophiles | chapter 6 | micro 509 | heading |
| Acme | chapter 14 | micro 509 | heading |
| Acquired antibiotic resistance | chapter 13 | micro 509 | heading |
| Acquired immune deficiency syndrome | chapter 18 | micro 509 | heading |
| Acquired immunity | chapter 17 | micro 509 | heading |
| Acquired immunity, artificially | chapter 17 | micro 509 | heading |
| Acquired immunity, naturally | chapter 17 | micro 509 | heading |
| Acquired immunodeficiency syndrome | chapter 18 | micro 509 | heading |
| Action as antimetabolites | chapter 13 | micro 509 | heading |
| Active immunity | chapter 17 | micro 509 | heading |
| Active transport | chapter 4 | micro 509 | heading |
| Activity, broad spectrum of | chapter 13 | micro 509 | heading |
| Activity, narrow spectrum of | chapter 13 | micro 509 | heading |
| Activity, spectrum of | chapter 13 | micro 509 | heading |
| Acute infection | chapter 14 | micro 509 | heading |
| Adherence | chapter 14 | micro 509 | heading |
| Adherence | chapter 16 | micro 509 | heading |
| Adsorption (virus) | chapter 10 | micro 509 | heading |
| Aerobe, obligate | chapter 6 | micro 509 | heading |
| Aerobic Gram-negative rods and cocci (bacteria) | chapter 9 | micro 509 | heading |
| Aerobic respiration | chapter 5 | micro 509 | heading |
| Aerobic, motile, helical, Gram-negative bacteria | chapter 9 | micro 509 | heading |
| Aerotolerant anaerobe | chapter 6 | micro 509 | heading |
| Agents, antifungal | chapter 13 | micro 509 | heading |
| Agents, Antiprotozoan | chapter 13 | micro 509 | heading |
| Agents, antiviral | chapter 13 | micro 509 | heading |
| Agglutination | chapter 17 | micro 509 | heading |
| AIDS | chapter 18 | micro 509 | heading |
| Airborne transmission | chapter 15 | micro 509 | heading |
| Alcoholic fermentation | chapter 5 | micro 509 | heading |
| Alcohols | chapter 12 | micro 509 | heading |
| Algae (introduction) | chapter 1 | micro 509 | heading |
| Alkaphiles | chapter 6 | micro 509 | heading |
| Alkylating agents | chapter 12 | micro 509 | heading |
| Allele | chapter 7 | micro 509 | heading |
| Allergen | chapter 18 | micro 509 | heading |
| Allergy | chapter 18 | micro 509 | heading |
| Ammonium compounds, quaternary | chapter 12 | micro 509 | heading |
| Amphitrichous | chapter 4 | micro 509 | heading |
| An Introduction to Taxonomy: The Bacteria | chapter 9 | micro 509 | chapter title |
| Anabolism | chapter 2 | micro 509 | heading |
| Anabolism | chapter 5 | micro 509 | heading |
| Anaerobe, aerotolerant | chapter 6 | micro 509 | heading |
| Anaerobe, facultative | chapter 6 | micro 509 | heading |
| Anaerobe, obligate | chapter 6 | micro 509 | heading |
| Anaerobic Gram-negative rods (bacteria) | chapter 9 | micro 509 | heading |
| Anaphylactic shock | chapter 18 | micro 509 | heading |
| Anaphylaxis | chapter 18 | micro 509 | heading |
| Anatomy, bacterial, cellular | chapter 4 | micro 509 | heading |
| Anatomy, fungal | chapter 11 | micro 509 | heading |
| Animal viruses | chapter 10 | micro 509 | heading |
| Animal viruses, culturing | chapter 10 | micro 509 | heading |
| Antagonism | chapter 13 | micro 509 | heading |
| Antagonism, microbial | chapter 14 | micro 509 | heading |
| Antibiotic | chapter 13 | micro 509 | heading |
| Antibiotic (introduction) | chapter 1 | micro 509 | heading |
| Antibiotic resistance | chapter 13 | micro 509 | heading |
| Antibiotic resistance, cross resistance | chapter 13 | micro 509 | heading |
| Antibiotic resistance, limiting drug resistance | chapter 13 | micro 509 | heading |
| Antibiotic sensitivity of microbes, determination | chapter 13 | micro 509 | heading |
| Antibiotic, Idea, attributes | chapter 13 | micro 509 | heading |
| Antibody | chapter 17 | micro 509 | heading |
| Antifungal agents | chapter 13 | micro 509 | heading |
| Antigen | chapter 17 | micro 509 | heading |
| Antigenic determinant | chapter 17 | micro 509 | heading |
| Antimetabolites, action as | chapter 13 | micro 509 | heading |
| Antimicrobial agent | chapter 13 | micro 509 | heading |
| Antimicrobial agents, specific | chapter 12 | micro 509 | heading |
| Antimicrobial Therapy | chapter 13 | micro 509 | chapter title |
| Antiprotozoan agents | chapter 13 | micro 509 | heading |
| Antiseptic | chapter 12 | micro 509 | heading |
| Antiserum | chapter 17 | micro 509 | heading |
| Antitoxin | chapter 17 | micro 509 | heading |
| Antiviral agents | chapter 13 | micro 509 | heading |
| Aperture, numerical | chapter 3 | micro 509 | heading |
| Arrangements, bacterial cell | chapter 4 | micro 509 | heading |
| Arthropod vectors | chapter 11 | micro 509 | heading |
| Arthropods (introduction) | chapter 1 | micro 509 | heading |
| Artificially acquired immunity | chapter 17 | micro 509 | heading |
| Aspergillus niger (wave) | supplement | micro 509 | wave |
| Asymetry of membranes | chapter 4 | micro 509 | heading |
| ATP | chapter 5 | micro 509 | heading |
| Atrichous | chapter 4 | micro 509 | heading |
| Attack complexes, membrane | chapter 16 | micro 509 | heading |
| Attenuated, live vaccine | chapter 17 | micro 509 | heading |
| Attenuation | chapter 14 | micro 509 | heading |
| Attributes of an ideal antimicrobial agent | chapter 13 | micro 509 | heading |
| Autoclave | chapter 12 | micro 509 | heading |
| Autotroph | chapter 5 | micro 509 | heading |
| Auxotroph | chapter 7 | micro 509 | heading |
| Axial filaments | chapter 4 | micro 509 | heading |