THE INDUCED DEVELOPMENT AND HISTOGENESIS OF PLASMA CELLS

Area of Science:

• Immunology
• Cell Biology
• Histology

Background:

• Plasma cells are crucial immune cells involved in antibody production.
• Understanding plasma cell differentiation is key to immune response research.
• Previous studies hinted at plasma cell proliferation but lacked a clear induction method.

Purpose of the Study:

• To discover a method for inducing large-scale plasma cell production.
• To characterize the morphological changes during plasma cell maturation.
• To investigate the role of toxic irritants in plasma cell proliferation.

Main Methods:

• Injection of rabbits with tuberculo-protein to stimulate plasma cell production.
• Microscopic examination of tissues (omentum, body wall, intestinal wall) for plasma cell identification and morphology.
• Supravital observation of plasma cells in blood and tissues.
• Comparative analysis with lymphocyte development.

Main Results:

• Tuberculo-protein injections successfully induced significant plasma cell proliferation, particularly in subserosal connective tissues.
• Detailed morphological changes were observed during plasma cell maturation, from primitive connective tissue cells to senile forms (including Russell body cells).
• Mature plasma cells exhibit amitotic division, while younger cells divide by mitosis. Supravital microscopy revealed characteristic cytoplasmic and nuclear features.

Conclusions:

• A reliable method for inducing plasma cell proliferation using tuberculo-protein has been established.
• The plasma cell is a distinct cell type with a defined maturation cycle, originating from primitive connective tissue cells.
• Plasma cell proliferation is a direct response to specific toxic irritants, differentiating them from lymphocytes in their response to stimulation.