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Poor Richard's Almanack mirrored the beliefs of its Pennsylvania readers in its glorification of
Macrophages
A type of immune cell that engulfs and digests cellular debris, foreign substances, microbes, and cancer cells in a process called phagocytosis.
Ultraviolet Light
Electromagnetic radiation with a wavelength shorter than that of visible light but longer than X-rays, having various effects on health and the environment.
Vitamin D
A fat-soluble vitamin that helps in the absorption of calcium, facilitating normal immune function and bone health.
Homeostasis
Homeostasis is the process by which organisms maintain a stable internal environment despite changes in the external environment.
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