Word: extract
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...test his theory, Riggio has been injecting gamma globulin from human placentas, which are usually discarded after delivery, into patients at the hospital's Rogosin Kidney Center. He hopes that the placental extract will transfer blocking antibodies into them. That then might encourage acceptance of new organs. A positive sign: when Riggio examined long-term transplant survivors at the center, he found that their acceptance of kidney grafts somehow appeared to have been enhanced by a biochemical mechanism similar to that postulated in pregnant women...
...Algae. Now two University of California researchers have discovered something that seems to stop the tenacious virus dead in its tracks: extracts from common red seaweed that have been known since 1964 to have antibacterial and antifungal properties. Acting on a hunch, Virologist E. Frank Deig and Graduate Student Douglas Ehresmann decided to find out if the extracts might also be effective against viruses. Since 1974 they have examined for antiviral properties 29 varieties of red algae common to northern California waters. Each variety was washed in distilled water, dried, boiled and homogenized in a blender. A 1 % solution...
...where the virus normally enters the cell. Human cells in culture appear to be otherwise unaffected by the substance and tests are already being made on mice and rabbits. But it will probably be as much as two years before researchers are certain enough about the safety of the extract to make it available to humans. The last promising technique for controlling herpes -daubing the skin eruptions with a photosensitive dye and exposing them to fluorescent light (TIME, July 12, 1971) -quickly dried up the sores and seemed to delay their recurrence. But it was largely abandoned when researchers demonstrated...
Should the extract eventually be used on humans, according to Ehresmann, it will probably be applied in ointment form directly to the developing herpes sores. That day would come none too soon for millions of herpes sufferers. Says Ehresmann: "Herpes virus disease is very disabling and disrupts the life of a victim. Any substance that could help control it would be a significant contribution to human health...
Other operatives then shipped the drug in vials to regional distributors, such as health-food shops, or mailed it directly to doctors and cancer victims. Though Laetrile, which is an extract from apricot pits, costs less than a dollar a vial to manufacture, U.S. patients paid as much as $50 for three daily injections...