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Did you know?
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
Did you know?
In the United States, congenital cytomegalovirus causes one child to become disabled almost every hour. CMV is the leading preventable viral cause of development disability in newborns. These disabilities include hearing or vision loss, and cerebral palsy.
Did you know?
In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
Did you know?
Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.
Did you know?
The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.
![Obstetrical sonography and fetometry. (a) The procedure is performed in a clinical setting. The inst](https://biology-forums.com/gallery/47/medium_14755_16_10_12_12_30_00_94542138.jpeg)
![Tooth development and eruption are commonly used to assess age in the subadult skeleton. Deciduous (](https://biology-forums.com/gallery/47/medium_273688_23_02_15_8_21_18_208891445.jpeg)