[Current knowledge on the functional morphology of the human spleen]

Area of Science:

• Immunology and cell biology, focusing on the spleen's complex functional anatomy.

Context:

• Spleen function is understood through disease analysis, immunological studies, and cell research.
• Intercellular relationships within the spleen are crucial for its immunological roles.

Purpose:

• To elucidate the spleen's blood purification mechanisms.
• To detail the roles of the vascular system, white pulp, red pulp, and marginal zone.
• To explore the cellular composition and structural basis of lymphocyte trafficking within T-dependent and B-dependent zones.

Summary:

• The spleen's vascular system, white pulp, red pulp, and marginal zone collaborate in blood purification.
• Circumference reticulum (CR) in periarterial lymphatic sheaths facilitates lymphocyte flow.
• T-dependent zones contain T lymphocytes, B lymphocytes, and interdigitizing cells; B-dependent zones contain B lymphocytes and dendritic reticular cells.

Impact:

• Future research using molecular probes (lectins, antibodies) and morphometrics will refine understanding of splenic cell subpopulations.
• This knowledge can lead to better-defined splenic cell populations and improved insights into immune responses.