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Holden Romaguera ∙
Produces white blood cells.
The endocrine system affects cells with certain receptors .
The nervous system can affect only nearby cells
Some species can gradually change into a new species.
Food supply
Thymus
Cholesterol for apex
Lymph nodes are the site of white blood cell production.
The immune system must attack the bodys own cells
Lysozymes
tyroid gland, paratyroid glands
t cells are killer cells
b cells are antibodies
it makes the body create memory cells for future infections