“Microbiome Signatures Across Mucosal Sites in Health and Disease: Integrative Perspectives on Oral, Airway, Gut, and Genitourinary Microbiomes in Pediatric, Autoimmune, Infectious, and Gender-Affirming Contexts” offers a thorough, well-structured treatment of its subject in depth, the work of Prof. Vadivel R. It balances foundational theory with practical, real-world application, making complex ideas accessible without losing depth. Aimed at students, researchers, and academic readers, it is published by Khushbu Publications, New Delhi, India, and released in 2026.