T-lymphocytes mature and differentiate in the thymus. Cytotoxic T-lymphocytes secrete antibodies. Cytotoxic T-lymphocytes in direct contact with an infected cell in order to kill it. Cytotoxic T-lymphocytes secrete , which cause a hole in the target cell's plasma membrane.

T-lymphocytes mature and differentiate in the thymus. Cytotoxic T-lymphocytes _do not_ secrete antibodies. Cytotoxic T-lymphocytes __come__ in direct contact with an infected cell in order to kill it. Cytotoxic T-lymphocytes secrete __perforins_ , which cause a hole in the target cell's plasma membrane

Explanation:

T lymphocytes are the type of immune cells that develop from stem cells in bone marrow and mature and differentiate in thymus.T cells may be either T helper cell (CD8+) or T cytotoxic cells (CD4+).Antibodies are secreted by plasma cells. T cytotoxic cells come in direct contact with infected cell to kill it by secreting the perforins specifically virus infected cells.

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