|
|
Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.
About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.
Over time, chronic hepatitis B virus and hepatitis C virus infections can progress to advanced liver disease, liver failure, and hepatocellular carcinoma. Unlike other forms, more than 80% of hepatitis C infections become chronic and lead to liver disease. When combined with hepatitis B, hepatitis C now accounts for 75% percent of all cases of liver disease around the world. Liver failure caused by hepatitis C is now leading cause of liver transplants in the United States.
Drug-induced pharmacodynamic effects manifested in older adults include drug-induced renal toxicity, which can be a major factor when these adults are experiencing other kidney problems.
Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
![The schematic of a variable valve timing control circuit, showing that battery power (+) is being ...](https://biology-forums.com/gallery/29/medium_548020_30_05_17_3_43_29_296491963.png)
![To help locate how far the engine is being rotated, the technician is removing the distributor cap ...](https://biology-forums.com/gallery/29/medium_548020_30_05_17_4_38_06_297241131.png)