Understanding O antigen and H antigen is essential in diagnostic microbiology, especially for serotyping of Salmonella and accurate laboratory diagnosis.
The shared notes and video cover:
🔹 Introduction to serological identification
🔹 Definition and structure of O antigen (somatic antigen)
🔹 Definition and structure of H antigen (flagellar antigen)
🔹 Key features and immunogenic differences
🔹 Detailed comparison between O and H antigens
🔹 Role in Salmonella serotyping and epidemiology
🔹 Clinical significance in enteric fever and outbreak investigations
This resource is particularly useful for microbiology students, laboratory professionals, and those preparing for BSc, MSc, MPhil, and competitive exams.
📺 Video link: https://youtu.be/SLc7fjE7O10
📝 Study notes: https://www.doctor-dr.com/2026/01/difference-between-o-antigen-and-h.html
📌 Knowledge of antigen–antibody interactions strengthens concepts in immunology, medical microbiology, and public health diagnostics.
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