Examlex
These drugs bind to endorphin receptors and mimic the action of endorphins.
Biological Mother
A woman who has given birth to a child, contributing genetically through ovum to the child's birth.
Biological Father
A term referring to the man from whom a child has inherited DNA, typically the child's genetic parent.
Y Chromosome
One of the two sex chromosomes in humans and most other mammals, typically present in males, who have one X and one Y chromosome.
X Chromosome
One of the two types of sex chromosomes, present in both genders but in women as a pair and men paired with a Y chromosome.
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