Lymphocyte nomenclature: β-lymphocytes are more commonly referred to as which cell type in immunology?

Introduction / Context:
Understanding lymphocyte classes is central to adaptive immunity. B lymphocytes (B cells) mediate humoral immunity by differentiating into plasma cells that secrete antibodies.

Given Data / Assumptions:

• The term β-lymphocyte is an alternative label pointing toward B lineage.
• We compare B versus T cell roles.

Concept / Approach:
B cells recognize antigen via membrane-bound immunoglobulin (BCR). After activation with T-cell help or via T-independent antigens, they proliferate and differentiate into plasma cells producing antibodies with specific Fab regions and effector Fc functions.

Step-by-Step Solution:
Identify equivalence: β-lymphocyte → B lymphocyte. Recall function: humoral immunity and antibody production. Select the concise term used in practice → B cells. Exclude T-lineage terms (T cells, T lymphocytes).

Verification / Alternative check:
Standard textbooks and clinical labs refer to B cells (CD19+, CD20+) and T cells (CD3+), confirming the naming convention.

Why Other Options Are Wrong:
T cells/T lymphocytes are a different lineage mediating cellular immunity; plasma cells are differentiated B cells but not the generic name for β-lymphocytes.

Common Pitfalls:
Confusing plasma cells (antibody factories) with their progenitors (B cells).

Final Answer:
B cells.