$18,750 unfavorable variable overhead spending variance = $360,000 â $341,250. Variance is unfavorable because the actual variable overhead costs are higher than the expected costs given actual hours of 97,500. $68,250 unfavorable variable overhead efficiency variance = $341,250 â $273,000.
The function of cytotoxic T cells, also called killer T cells or cytotoxic T lymphocytes, is to protect the body from disease and infection. They do so by killing diseased cells. T cells are white blood cells that are part are the body's immune system. White blood cells defend your body against disease, cancer, infections and foreign substances.
function in immunity. Two main types of mature T cellsâcytotoxic T cells and helper T cellsâare known. Some scientists hypothesize the existence of a third type of mature T cell called regulatory T cells. Some T cells recognize class I MHC molecules on the surface of cells; others bind to class II molecules.