Problems of Pregnancy
The period between conception (fertilization) and birth is called pregnancy. The pregnancy period generally lasts for 9 months and 7 days. During this period, some...
Principal vitamins and its function
Vitamins Function Deficiency A(retinol) Rhodopsin synthesis, normal health of epithelial cells, and bone and tooth growth. Rhodopsin deficiency, night blindness, retarded growth, skin disorders,...