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Biomedical subjects

R Kenyon

Publications and source records attributed to R Kenyon.

16 recordsLinked to original sources

Four- versus five-day estrous cycles in rats: vaginal cycling and pregnancy.

Five- compared to four-day cycling rats had earlier onsets and prolonged periods of full vaginal cornification at estrus, and similar times of the first appearance of the "pavement" cells that signal the end of estrus. In mating tests, a larger proportion of five- compared to four-day cyclers became either pregnant or progestational after mating to one ejaculation by the male. As groups, four- and five-day cyclers did not differ in measures of male or female sexual behavior during the mating test. The observed differences between four- and five-day cyclers in the progestational response to one ejaculatory series and in cyclic vaginal cytology are consistent with previously reported hormonal differences between four- and five-day cycling female rats.

Animals

Coagulation and complement studies in Rocky Mountain spotted fever.

A patient with laboratory-acquired Rocky Mountain spotted fever (RMSF) and concomitant influenza virus infection was studied from the third day of clinical illness. The course of his illness was marked by petechial rash, thrombocytopenia, and elevation of fibrin split products. No evidence of complement activation was observed. Plasma proteins were elevated in a pattern characteristic of the "acute phase reaction." The patient recovered completely, and vascular collapse or clinically important disseminated intravascular coagulation had developed. In febrile patients who had influenza or a clinically similar noninfluenzal respiratory syndrome, no changes in coagulation, complement, or plasma proteins developed. We conclude that aberrations in the patient's laboratory values reflected RMSF, and that complement played no critical role in his illness.

Blood Coagulation

Dynamic and static violations of Hering's law of equal innervation.

Hering's Law of Equal Innervation treats the double eye as a single organ. Normal humans often execute saccadic eye movements that are dynamic violations of Hering's Law. These infractions are produced by differences in the neural controller signals sent to each eye and are exemplified by monocular movements, such as dynamic overshoot, glissades, and double saccades; these dynamic violations occur more frequently in fatigued subjects. In contrast to dynamic violations, static violations of Hering's Law are usually indicative of pathological conditions.

Aged

Dizziness.

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Electrooculography

Dangerous toys.

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Child, Preschool

Pacemakers.

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Humans

In sharp relief.

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Canada