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The cells which are involved in the production of antibodies are known as B cells. These are effector cells which will secrete anybodies and activate the antigens.
tissue
Alpha cells in the pancreas detect low blood sugar and secrete glucagon. Glucagon travels to the liver to stimulate breakdown of glycogen reserves (glycogenolysis) and stimulate gluconeogenesis (production of new glucose).
These chemicals are called CYTOKINES.
Being healthy is the only real stimulant of production of spermatozoa. (Sperm cells).
In general, stimulate means to rouse or awaken. And secrete means to hide, or within the body, to separate cells or release fluids.
Helper T cells help to activate T-cytotoxic cells and B-cells. For instance, if you become infected with a pathogen, a macrophage can consume that pathogen and then present parts of it on its own MHC (Major Histocompatability Complex) receptors. T helper cells then detect this and if this is a pathogen previously encountered, it can stimulate T-cytotoxic cells to begin attacking infected cells, and stimulate B-memory cells to begin rapidly dividing into B-plasma cells to produce anitbodies.
Helper T cells help to activate T-cytotoxic cells and B-cells. For instance, if you become infected with a pathogen, a macrophage can consume that pathogen and then present parts of it on its own MHC (Major Histocompatability Complex) receptors. T helper cells then detect this and if this is a pathogen previously encountered, it can stimulate T-cytotoxic cells to begin attacking infected cells, and stimulate B-memory cells to begin rapidly dividing into B-plasma cells to produce anitbodies.
Thymus gland
Thymus gland
CSFs and interleukins
The islets of Langerhans are located in the pancreas and they secrete insulin, which stimulate the cells to absorb glucose in the bloodstream (lowering blood sugar).