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Thyroid conditions may make getting pregnant impossible.
More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.
This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).
![Photograph taken during a laparoscopic procedure. The fundus of the uterus is visible below the prob](https://biology-forums.com/gallery/47/medium_14755_28_08_12_1_52_26_82611757.jpeg)
![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)