They can live on hard surfaces for up to 24 hours, but not things like tissues only live up to 15 minutes
Answer:
There are 3 main types of T cells: cytotoxic, helper, and regulatory. Each of them has a different role in the immune response. Cytotoxic T cells (Tc cells) have a co-receptor called CD8 on their cell surface. CD8 partners with the T cell receptor and with MHC class I molecules, acting as a sort of bridge.
Explanation:
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Vitamin C is water-soluble, ascorbic acid supplement to our body. We get vitamin C from citrus fruits, tomatoes and of course vitamin C tablets. Too much vitamin C or overdosage will cause indigestion, diarrhea, cramps, hair loss, nausea and nerve damage to the person. Daily recommended dosage is until 90 mg per day.
—Exercising can help you look better. People who exercise burn more calories and look more toned than those who don't. In fact, exercise is one of the most important parts of keeping your body at a healthy weight.
—Exercise helps people lose weight and lower the risk of some diseases. Exercising to maintain a healthy weight decreases a person's risk of developing certain diseases, including type 2 diabetes and high blood pressure. These diseases, which used to be found mostly in adults, are becoming more common in teens.
—Exercise can help a person age well. This may not seem important now, but your body will thank you later. Women are especially prone to a condition called osteoporosis (a weakening of the bones) as they get older. Studies have found that weight-bearing exercise — like jumping, running, or brisk walking — can help girls and boys keep their bones strong.
