Understand the structure and function of the immune system, including its cellular and molecular components, the distinction between innate and adaptive immunity, and the roles of primary and secondary lymphoid organs in maintaining immune homeostasis and defending against pathogens.

Describe the origin and development of immune cells from hematopoietic stem cells, including differentiation pathways of myeloid and lymphoid lineages, and understand how these developmental processes establish the foundation for functional immunity.

Explain the processes of T and B lymphocyte maturation, including central tolerance, positive and negative selection in the thymus and bone marrow, and how these mechanisms prevent autoimmunity while generating a diverse and functional lymphocyte repertoire.

Understand the components and mechanisms of the innate immune system, including phagocytes, natural killer cells, complement, and pattern recognition receptors, and how these elements provide immediate defense against infections.

Describe the structure and function of secondary lymphoid tissues such as lymph nodes, spleen, and mucosa-associated lymphoid tissue, and explain how innate immune signals activate adaptive immune responses to coordinate effective pathogen clearance.

Explain the processes of antigen recognition and presentation, T and B cell activation, and the interactions between helper T cells and B cells that lead to effective adaptive immune responses and antibody production.

Understand the structure, classes, and functions of antibodies, the mechanisms of humoral immunity including neutralization, opsonization, complement activation, and class switching, and their roles in protecting the host from extracellular pathogens.

Describe the roles of cytotoxic T lymphocytes, helper T cells, and natural killer cells in cell-mediated immunity, including the mechanisms for recognizing and eliminating infected or abnormal cells, and the regulation of immune responses against intracellular pathogens.

Introduce laboratory techniques used to assess immune function and detect pathogens or antibodies, including ELISA, flow cytometry, and serological tests, and explain their clinical applications in diagnosing immune-related diseases.

Understand the principles of vaccination, including types of vaccines, mechanisms of induced immunity, booster strategies, and the concept of herd immunity, and their role in preventing infectious diseases.

Explain the four types of hypersensitivity reactions, the mechanisms that lead to loss of self-tolerance, and the immunopathogenesis of common autoimmune diseases, integrating this knowledge to understand their clinical manifestations and management.

Understand immune responses in transplantation, including mechanisms of graft rejection, the role of HLA matching, and the use of immunosuppressive therapies to prevent rejection while maintaining host defense.

Understand immune responses in transplantation, including mechanisms of graft rejection, the role of HLA matching, and the use of immunosuppressive therapies to prevent rejection while maintaining host defense.

Understand the basic principles of microbiology, including the classification, morphology, growth characteristics, and metabolism of microorganisms, and the fundamental concepts of microbial pathogenesis, host-pathogen interactions, and laboratory identification.

Describe the structure, classification, pathogenic mechanisms, and clinical significance of bacteria that commonly cause human disease, including Gram-positive, Gram-negative, and atypical bacteria, and understand principles of diagnosis, treatment, and prevention.

Understand the classification, structure, replication, and pathogenesis of viruses important in human disease, and learn the clinical features, diagnosis, and prevention strategies for viral infections.

Describe the taxonomy, morphology, pathogenic mechanisms, and clinical manifestations of fungi that cause human disease, including superficial, subcutaneous, and systemic mycoses, and understand laboratory diagnosis and antifungal therapy.

Understand the biology, life cycles, pathogenicity, and clinical presentations of medically important parasites, including protozoa and helminths, and learn diagnostic, therapeutic, and preventive approaches.

Apply microbiological principles to clinical scenarios, including the recognition, diagnosis, management, and prevention of infectious diseases caused by bacteria, viruses, fungi, and parasites.

Compare and contrast bacteria, viruses, fungi, and parasites in terms of structure, replication, pathogenesis, and clinical significance, highlighting similarities and differences that inform diagnosis, treatment, and infection control.