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The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.
Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.
Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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.
Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.
![The learning and retention of the mirrordrawing task by H.M. Despite his good retention of the task, ...](https://biology-forums.com/gallery/30/medium_548020_06_06_17_12_41_58_30351518.png)
![Standing at the side of the table facing the head, mobilize the scapula by pressing along medial ...](https://biology-forums.com/gallery/33/medium_380798_23_08_17_3_35_49_331661523.jpeg)