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Circadian Rhythms


 

4 meses, 3 semanas

Compre ahoraDe La biología del desarrollo prenatal

Guión: From 19 weeks fetal movement, breathing activity, and heart rate begin to follow daily cycles called circadian rhythms.

Todas las edades en referencia a la fecundación, no al último período menstrual. Un mes = 4 semanas.
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