Word: occured
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Dates: during 1980-1989
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...abrasions. This creates a route of entry for the virus in semen." On assessing personal risk: "Are you a man who has had sex with other men that involved the exchange of body fluids at any time since 1977? A single contact may have been sufficient for infection to occur...
...shocked and appalled that such an incident could occur in this `enlightened' age at this institute of higher education," wrote Building Director Paul McNaughton about the pamphlet, The Daily reported...
...vulnerable population must have suitably efficient routes of transmission. Potentially infectious contact between members must occur often enough to offset the rate at which the disease--or the behavioral changes it entails--removes those who are infectious...
...early stages of pregnancy, they have not yet developed all the antigens, or distinctive surface proteins, that allow the recipient's immune system to identify and reject them. Another advantage of fetal cells is that they are generally not mature enough to cause graft-vs.-host disease, which can occur when the tissues of a transplant recipient are attacked by implanted adult cells. Also, fetal nerve cells, unlike adult cells, can regenerate and thus have the potential to repair a damaged brain or spinal cord. "These properties," says Green, "make fetal cells a very exciting glue to tie together injured...
...timing may help the book's sales, but Leonard's imaginative license is liable to be mistaken for a matter of fact. That would be unfair because the author makes unlikely events spring from carefully prepared plausibilities, some of which, through no fault of his own, may actually occur...