Final answer:
Conjugate pairs of T and B cells are initially formed at the T cell-B cell border, which is a specialized area within secondary lymphoid organs. It facilitates communication and interaction between T cells and B cells.
Step-by-step explanation:
Conjugate pairs of T and B cells are initially formed at the T cell-B cell border. This is where T cells interact with B cells to initiate immune responses. The T cell-B cell border is a specialized area within secondary lymphoid organs such as lymph nodes and spleen, where T cells and B cells are organized in close proximity to facilitate communication and interaction between them.