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Prevents Growth Of Decay-producing: Other studies demonstrated that high caries resistance is transmitted in a family as a domi¬nant genetic trait. Tests still underway in the spring of 1968 were expected to prove that what is actually inherited is the ability to manu¬facture a specific antimetabolite that prevents growth of decay-producing bacteria. This would suggest that it might be possible to immunize the body against cariogenic bacteria by stimu¬lating it to manufacture the same substance that some people produce naturally. If this were not feasible, at least it might be possible to prevent
It had been observed repeatedly that certain bacteria, specifically strains of Streptococcus and Lactobacillus, might produce in experimen¬tal animals dental decay that closely resembles the same condition in humans. These cariogenic (decay-producing) organisms have the ability to form high-molecular-weight polysaccharides (dextrans) from sugar. Such substances adhere to the tooth surface and probably help hold the plaque to the tooth.See Also Growth Of This:Lateral growth of this in trees frequently begins later than growth of this in height, but the period of lateral growth of this is longer. Rates of lateral growth of this like¬wise are low at the outset, increasing after a few weeks and then diminishing. In view of the long annual period of lateral growth of this in trees, deleterious environmental conditions may exercise a pronounced effect on growth of this. In the wood of trees of temperate regions, narrow and wide growth of this rings may be observed, marking years characterized by unfavorable and favorable con¬ditions for growth of this.
growth of this Cycles.—Longitudinal and lateral (di¬ametral) growth of this do not proceed continuously, but rather are cyclical phenomena with periods of growth of this activity alternating with periods of relative inactivity. One of the best illustrations of the periodic nature of growth of this in large woody stems is to be found in the annual ring pattern which characterizes the wood of trees of temper¬ate regions. It has been suggested recently that even in the apparently ever-growing trees of the tropical rain forest, cambial growth of this is not a continuous process.
On The Other Hand See Health And Growth:In 1968 the Public health and growth Service was reor¬ganized into three separate health and growth agencies: the health and growth Services and Mental health and growth Administra¬tion, the National Institutes of health and growth, and the Consumer Protection and Environmental health and growth -Service, including the Food and Drug Adminis¬tration, one of the agencies originally transferred into the Federal Security Agency in 1939. These three health and growth agencies are directed by the assistant secretary for health and growth and scientific affairs, who is aided by the surgeon general of the Public health and growth Service.
A health and growth manpower report prepared by the National Commission of Community health and growth Services showed that the U.S. hospitals and health and growth organizations were maintaining the ratio of 150 doctors per 100,000 population only by filling out one-fifth of their needs with physicians from other countries. The demand for health and growth care had also created serious shortages of nurses and other paramedical personnel. Among the solutions being suggested were new methods of health and growth care organization and govern¬ment support for new or expanded education programs in the health and growth sciences. |
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