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A LEVEL BIOLOGY cells and the immune system 1

Horizontales
A round organelle that contains digestive enzymes called lysozymes.
A type of antibody produced by a single clone of cells.
A process where T-helper cells bind to antigens on the surface of B-cells. This then stimulates the B-cell to divide by mitosis (two words).
A microorganism that causes disease.
Type of immune response where memory cells divide rapidly to produce plasma cells. There are usually no symptoms with this response.
A harmful molecule released by some pathogens.
Type of immune response produced with first exposure to a pathogen. There are usually symptoms with this response.
Verticales
A type of immune response where B-cells undergo clonal selection, producing antibodies.
Type of cells that secrete lots of antibodies specific to a particular antigen.
The inward transport of molecules through a cell-surface membrane. In this case, the movement of pathogens during phagocytosis.
Types of white blood cell responsible for the immune response. They become activated in the presence of antigens. There are two types.
Mechanism by which cells engulf particles to form a vesicle or vacuole.
A type of T-cell responsible for releasing chemicals that activate and stimulate phagocytes and cytotoxic T-cells.They also activate B-cells which secrete antibodies.
Type of immune response where T-cells and other immune cells interact.
Type of T-cell that kills abnormal and foreign cells.
A protein produced by lymphocytes (B-cells) in response to the presence of a specific antigen.
A molecule that triggers an immune response by lymphocytes (B-cells and T-cells).