Slow blood flow can occur if there is a narrowing of the blood vessel. This can obstruct the flow. One common cause is atherosclerosis. There are deposition of cholesterol or lipids in the wall of the arteries which can narrow it. Other causes can be an inflammation. In the veins there can be slow flow where there is difficulty in pumping blood from legs towards the heart. If you feel any symptom, you should get an examination you need to get it checked by doctor. Any query, please feel free to ask.
Retroviruses belong to the Retroviridae family of viruses. Their genetic material consists of ribonucleic acid (RNA), instead of deoxyribonucleic acid (DNA). Viruses of this type also contain reverse transcriptase. Retroviruses are known to lead to certain types of cancers in both humans and animals, as well as a range of viral infections. Human Immunodeficiency Virus (HIV), the virus that causes Acquired Immune Deficiency Syndrome (AIDS), is one example.
Today weâll start with retroviruses. A retrovirus looks about the same as any other virus, but it functions significantly different that your run-of-the-mill influenza. HIV is the most significant retrovirus that infects humans; others include hepatitis B and human T-lymphotropic virus. Some retroviruses specifically infect animals and plants too; they are known for cats, cows, mice, monkeys, chicken, cauliflower, and more. Viruses are essentially just genes, encapsulated in a protein. Most common viruses, such as influenza, function by entering a hostthe host is the organism, such as a person, that the virus has infected cell (such as a cell in your body) and hijacking the cellâs machinery to make copies of its own genes (below).