Answer:
A
Explanation:
Everywhere is a danger zone. Set limits ang a proper and calm communication can at least reduce violent act
Answer:
Okay
Explanation:
Human topoisomerase I plays an important role in removing positive DNA supercoils that accumulate ahead of replication forks. It also is the target for camptothecin-based anticancer drugs that act by increasing levels of topoisomerase I-mediated DNA scission. Evidence suggests that cleavage events most likely to generate permanent genomic damage are those that occur ahead of DNA tracking systems. Therefore, it is important to characterize the ability of topoisomerase I to cleave positively supercoiled DNA. Results confirm that the human enzyme maintains higher levels of cleavage with positively as opposed to negatively supercoiled substrates in the absence or presence of anticancer drugs. Enhanced drug efficacy on positively supercoiled DNA is due primarily to an increase in baseline levels of cleavage. Sites of topoisomerase I-mediated DNA cleavage do not appear to be affected by supercoil geometry. However, rates of ligation are slower with positively supercoiled substrates. Finally, intercalators enhance topoisomerase I-mediated cleavage of negatively supercoiled substrates but not positively supercoiled or linear DNA. We suggest that these compounds act by altering the perceived topological state of the double helix, making underwound DNA appear to be overwound to the enzyme, and propose that these compounds be referred to as ‘topological poisons of topoisomerase I’
“The prostate is a gland that produces the fluid that carries sperm during ejaculation. The prostate gland surrounds the urethra, the tube through which urine passes out of the body.
Male reproductive anatomy
An enlarged prostate means the gland has grown bigger. Prostate enlargement happens to almost all men as they get older.
An enlarged prostate is often called benign prostatic hyperplasia (BPH). It is not cancer, and it does not raise your risk for prostate cancer.
Enlarged prostate glandWatch this video about:
Enlarged prostate gland
Causes
The actual cause of prostate enlargement is unknown. Factors linked to aging and changes in the cells of the testicles may have a role in the growth of the gland, as well as testosterone levels. Men who have had their testicles removed at a young age (for example, as a result of testicular cancer) do not develop BPH.
Also, if the testicles are removed after a man develops BPH, the prostate begins to shrink in size.
Some facts about prostate enlargement:
The likelihood of developing an enlarged prostate increases with age.
BPH is so common that it has been said all men will have an enlarged prostate if they live long enough.
A small amount of prostate enlargement is present in many men over age 40. More than 90% of men over age 80 have the condition.
No risk factors have been identified, other than having normally-functioning testicles.
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Enlarged Prostate (BPH)
Enlarged Prostate (BPH)
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NIH MedlinePlus Magazine
NIH MedlinePlus Magazine
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Health Topics A-Z
Health Topics A-Z
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Answer:
The right ventricle can be found below the right atrium and opposite the left ventricle in the bottom right part of the heart.
