There are 20 feet of blood vessels in each square inch of human skin.
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In 1864, the first barbiturate (barbituric acid) was synthesized.
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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.
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Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.
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Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.
Primary and secondary immune responses.
Biology deals with the study of the many varieties of living organisms.
Metastatic process: Tumor leaving primary site to travel to other distant organs to grow.
Examples of Primary (Congenital) Forms of Immunodeficiency