Examlex
The largest optical telescope ever constructed was a refracting telescope.
Home Pregnancy Tests
Over-the-counter tests that allow individuals to determine pregnancy status by detecting the presence of the hormone hCG in urine.
Pregnancy
The period during which a fertilized egg develops into a fetus inside a woman's uterus, typically lasting about 40 weeks from the last menstrual period to childbirth.
Biochemical Barrier
Natural or artificial barriers at the cellular or molecular level that prevent or control the passage of harmful substances, often part of innate immune defense.
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