mRNA Vaccines
mRNA vaccines are a new type of vaccine that teaches the body to fight a disease by delivering genetic instructions rather than a weakened or…
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Human Blood Types
Human blood comes in different types, determined by molecules on the surface of red blood cells. The discovery of blood types made safe blood…
The Circulation of Blood
The circulation of blood is the continuous movement of blood around the body, pumped by the heart through a network of vessels. This understanding,…
Handwashing Prevents Infection
Washing the hands with soap and water is one of the simplest and most powerful tools in all of medicine for preventing the spread of disease. It is a…
Smoking Causes Cancer
That tobacco smoking causes cancer is one of the most thoroughly established findings in all of medicine. Smoking is the leading preventable cause of…
Pasteurization
Pasteurization is the process of heating a food or drink to a specific temperature for a set length of time in order to kill harmful microorganisms…
Penicillin
Penicillin was the first true antibiotic, a medicine that kills bacteria and cures infections that had once been routinely fatal. Its discovery and…