Examlex
What is the interaction between an agent, a host, and the environment called?
PCBs
Polychlorinated biphenyls, a class of highly toxic chemical compounds used in various industrial applications, now banned or restricted due to environmental and health risks.
Fetal Development
The progressive growth and formation of a fetus inside a woman's uterus, starting from conception to birth.
Natural Experiments
Observational study designs where the subjects are exposed to the experimental and control conditions that are determined by nature or by other factors outside the control of the investigators.
Cephalocaudal
A principle of growth and development where development proceeds from the head down through the body.
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