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Show I r 0VIlPAVliADVERTISER-DAV- IS COUNTY CLIPPER, LEADER-WEEK- LY REFLEX-DAV- IS i NEWS JOURNAL, Birth Control Chemical natural birth control A .Aim - WzW 'W chemistry in field grasses which turns on and off the reproductive activity of mice and perhaps other grazing animals has been discovered by University of Utah researchers. THE TEAM of biologists and chemists has already identified a chemical found in the dried grasses of autumn fields that proved in laboratory tests to inhibit reproduction in a species of mice called Microtus montanus. This work is reported in the current issue of the journal Science. IJesi qf f&zsks LOWEST PRICE IN TOWN! DURABLE STEEL CEREAL MOLL 184-PAG- E the complementary com- from green spring grass that stimulates the rodents to begin their seasonal reproduction. Tests are now underway to determine whether the fercintility inhibitor-natur- al namic acids and derivative called compounds pound SURVIVAL HANDBOOK 47 in vinylphenols-wor- ks another type of animal, white rhts. IF THESE chemicals work in other animal systems, the potential applica- e Making the Best of Basics is a home storage manual that helps you discover the potential of home storage. This manual includes basic gardening and dietary techniques. Special medical instructions too. 184-pag- Great Northern steel cereal mill is adjustable for grinding flour or cereal by hand In your own home. It will grind wheat, corn, soybeans, nuts, seeds and herbs easily and efficiently. Speed operation grinds up to a pound a minute. THE RESEARCHERS say they are close to identifying tions could be says Dr. Patricia J. Berger, research associate professor of biology and one of the principal investigators. But we want to emphasize that the only animal we know this chemical works in right species of now is a specific mouse. THE OTHER researchers on the project include Dr. Norman C. Negus, professor of biology; Dr. Pete D. Garoner, professor of both chemistry and biology; and Dr. Ed Sanders, a postdoctoral fellow in biology. Old wives tales and observations by people who work with livestock and wildlife have always implied some connection between the condition of the food supply and fertility. Dr. Berger says. PEOPLE have observed twinning in deer in response to good pasture. Horse breeders will tell you that horses will mate any time of the year, but you cant get a mare to hold a foal until the grass is green. We used mice in our studies because the effects of changes in fertility are much more pronounced than in larger animals. They produce several litters with numerous offspring each season, she adds. THE PROJECT actually began a decade ago with field and laboratory observations by Dr. Negus that led him to believe some compound in field grasses might be stimulating reproductive ac- tivity in mice. He spotted the presence of a stimulator, and in trying to isolate this compound we ac- cidentally came across the Dr. fertility inhibitor, Berger says. IN THE experiments, extracts were taken from winter wheat and separated into three fractions. Food coated with each of these compounds was fed to female mice, then the uteri were removed and weighed. One of the three compounds was found to inhibit uterine development. We are working now to trace the biochemical pathways by which these compounds produce their effect in the rodents system, Dr. Berger says. We think they act at the pituitary gland to READY-RESERV- E I X IKITOOM1? T X o o X X affect the release of reproductive hormones that control reproduction. DR. BERGER adds, What our findings represent is a finely evolved system of animals interacting with plants to keep their breeding in tune with the seasons, climate and food supply. To inhibit reproduction at the onset of winter, inhibitor compounds would have to be more predominant in the end of the grass growth cycle. Other researchers have shown that cinnamic acid levels are highest in wheat after flowering and fruiting. And our team has shown previously that the addition of green plant food to the diet of rodents enhances cycles Ready-Reserv- e foods are a practical answer to the problem of food storage. Ready-Reserv- e offers a complete line of home food products, cans, enameled inside packed in heavy-dut- y out for and long storage life. These foods are vacuum nitrogen packaged, resulting in 2 or less residual oxygen at the time of packing. 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At the present time both the FDA and industry are conducting testing of many other colors used in food, drugs and cosmetics, to make sure that whatever is used has been adequately shown to be safe. A |