Diverticula are small, bulging pouches commonly found in the esophagus and large intestine. If we were to pass an endoscope in either of these areas of the GI tract, we would see what appears to be holes. Under closer examination, we can see that these holes lead into pouches. If organic material gets trapped within the diverticula it can cause irritation and even an infection. Although it is extremely rare to see the formation of diverticulum in the esophagus, they can be found within the colon in of all Americans over 50 years of age.

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Chemotherapy works by stopping or slowing the growth of cancer cells, which grow and divide quickly. It can also harm healthy cells that divide quickly, such as those that line your mouth and intestines or cause your hair to grow. Damage to healthy cells may cause side effects. Chemotherapy kills cells that are in the process of splitting into 2 new cells. Because cancer cells divide much more often than most normal cells, chemotherapy is much more likely to kill them. Some drugs kill dividing cells by damaging the part of the cell's control centre that makes it divide.

Coronavirus disease (COVID-19) technical guidance: Laboratory testing for ... to laboratories and stakeholders involved in laboratory testing of COVID-19 virus. ... Diagnostic testing for COVID-19 is critical to tracking the virus, understanding ... 2. WHO interim guidance for laboratory biosafety related to COVID-19 virus.

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