title: Systems of life. No 102 . Setting up the systems-2.
mesh_terms: D000328:Adult; D004314:Down Syndrome / Q000175:diagnosis; D005260:Female; D005306:Fertilization; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D011247:Pregnancy; D012729:Sex Chromosome Aberrations / Q000175:diagnosis*; D012730:Sex Chromosomes / Q000502:physiology*