$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 regulatory T cells (Tregs pronunciation: /ËtiËrÉÉ¡/), formerly known as suppressor T cells, are a subpopulation of T cells which modulate the immune system, maintain tolerance to self-antigens, and prevent autoimmune disease.
There are four types of T cells, each with a special purpose. 1  Helper T cells detect infection and get the other cells of the immune system ready for battle. 2  Cytotoxic, or killer, T cells destroy infected cells. 3  Regulatory T cells tell the immune system when the battle with the pathogens is over and to stop fighting.