Cells and Yin-Yang polarity (towards greater similarity between the animate and the inanimate).
D002454:Cell Differentiation; D002477:Cells; D004560:Electricity; D055590:Electromagnetic Phenomena; D005260:Female; D005854:Germ Cells; D006801:Humans; D008297:Male; D008516:Medicine, Chinese Traditional; D008518:Medicine, East Asian Traditional; D008938:Mitosis; D010686:Philosophy, Medical