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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.
In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.
Congestive heart failure is a serious disorder that carries a reduced life expectancy. Heart failure is usually a chronic illness, and it may worsen with infection or other physical stressors.
Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.
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.
![Leafcutter ants carrying leaf fragments back to the nest where they will be processed to create a su](https://biology-forums.com/gallery/47/medium_33_09_09_11_10_15_38_1724111.jpeg)
![Isotopes may be stable or radioactive depending on the arrangement and number of neutrons in the nuc](https://biology-forums.com/gallery/47/medium_274477_04_02_15_12_24_33_205762087.jpeg)