Examlex
Nongranular leukocytes have a circulating life span of just a few days.
Blood
A vital fluid in humans and animals that delivers necessary substances such as nutrients and oxygen to cells and transports metabolic waste products away.
Black Bile
One of the four humors in ancient and medieval medicine, believed to be associated with melancholy when present in excess.
Endocrine System
A network of glands and organs that produce, store, and secrete hormones into the bloodstream to regulate the body's metabolism, growth, and development.
Hormones
Chemical messengers produced by glands in the body that regulate physiological processes and behavior.
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