The book has over 672 pages which include the 5 units, expanding the microbiology in a systematic manner. The seventh edition of Ananthanarayan has been released four years after their sixth edition, in the memory of Dr. R Ananthnaryana by Dr. Ck Jayaram Paniker. The book is one of the standard books used in medical colleges and universities for their second-year microbiology curriculum. There are 68 chapters in total in the book, some of which are:
- Morphology and Physiology of Bacteria
- Culture Media
- Bacterial Taxonomy
- Infection
- Immunity
- Antigens
- Complement system
- Hypersensitivity
- Staphylococcus
- Streptococcus
- Mycobacterium I: Tuberculosis
- General Properties of Viruses
- Herpes Viruses
- Arbo Viruses
- Rhabdo Viruses
- Medical Mycology