The cytoplasm of the lower epidermal cells of the plant species zebrina contains purple pigment. what is the advantage of using the purple colored epidermis of zebrina

Which of the following are not matched correctly? cd8+: directly destroy infected or cancerous cells t reg cell: reduce the adaptive response once threat passes t l: activate cellular branch (cytotoxic t cells, macrophages, nk cells) t 2: stimulate b cells to make antibodies t (cd4+): mhc i