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Approximately 500,000 babies are born each year in the United States to teenage mothers.
Oxytocin is recommended only for pregnancies that have a medical reason for inducing labor (such as eclampsia) and is not recommended for elective procedures or for making the birthing process more convenient.
According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.
Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.
Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.
![Attachment of transmembrane proteins to the cytoskeleton and extracellular matrix of an animal cell.](https://biology-forums.com/gallery/47/medium_33_20_06_11_5_36_40.jpeg)
![Browning and Gunning demonstrated that placental transfer tissues increase plant reproductive succes](https://biology-forums.com/gallery/47/medium_33_17_07_11_10_52_54.jpeg)