Which cells are necessary for active immunity to occur?Multiple Choicememory B and memory T cellsplatelets and memory B cellsmemory B and helper T cellsred blood cells and helper T cells

The major types of ______ are T-cells and B-cells, both important in immunity.Multiple choice question.macrophageslymphocytesmonocytesplasma cells

Which of the following are mediated by antigen-specific T-cells and nonspecific cells of the immune system?

The cells responsible for cellular immunity are the ________ cells. Question 5Select one:a.NKb.plasmac.helper Td.cytotoxic T e.suppressor T

__________ are the most abundant T cells, and their function is to __________.ANSWERT helper cells (CD4+); activate B cells to stimulate the humoral branch of adaptive immunityT cytotoxic cells (CD8+); directly destroy cells that are virus-infectedT helper cells (CD4+); coordinate the adaptive immune responseT cytotoxic cells (CD8+); seek and destroy cancer cells

Which of the following is used during a second interaction with an antigen, and results in a heightened state of immunity after? Group of answer choicesImmunological MemoryTolerancePathogenInnate Immunity