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Prevents Growth Of Decay-producing: Other studies demonstrated that high caries resistance is transmitted in a family as a dominant genetic trait. Tests still underway in the spring of 1968 were expected to prove that what is actually inherited is the ability to manufacture 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 stimulating 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 experimental 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.
Once started, mow whenever growth necessitates. With most grasses as soon as they are half to three quarters of an inch to one inch higher than established cutting height. This may mean once a week at times, but in periods of rapid growth twice-a-week attention is necessary, and when growth is slow more time may elapse between mowings. It pays to mow frequently and to take a little each time rather than a lot. Don't let the grass get so high before mowing that after cutting it looks yellowish or brownish. This is an invitation to crab grass; diseases and pests. If bad weather prevents mowing before the grass is conspicuously longer than proper, raise the cutting height a little at the first mowing and gradually bring it to normal at subsequent cuttings. |
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