|
|
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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.
It is important to read food labels and choose foods with low cholesterol and saturated trans fat. You should limit saturated fat to no higher than 6% of daily calories.
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).
![The EEG of alert wakefulness, the EEG that precedes sleep onset, and the four stages of sleep EEG. ...](https://biology-forums.com/gallery/30/medium_548020_07_06_17_2_21_51_3039874.png)
![A latex agglutination test for rheumatoid factor. A positive control at 1. A negative control at 2. ...](https://biology-forums.com/gallery/31/medium_398119_12_07_17_8_35_35_31675202.jpeg)