Benjamin Jackson

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Acute hypoxemia was produced in chronically catheterized sheep fetuses to determine the response time necessary to increase plasma immunoreactive erythropoietin (Ep) concentration. Sodium nitrite (0.2 mM) was infused via a fetal vein to induce fetal hypoxemia. The resultant fetal methemoglobinemia was associated with a predictable, incremental decrease in(More)
Parallel evolution of similar phenotypes provides strong evidence for the operation of natural selection. Where these phenotypes contribute to reproductive isolation, they further support a role for divergent, habitat-associated selection in speciation. However, the observation of pairs of divergent ecotypes currently occupying contrasting habitats in(More)
Twenty consecutive patients (12 male and 8 female) with second-degree, third-degree, or thrombosed hemorrhoids were randomly allocated to undergo either diathermy hemorrhoidectomy (n = 10) or a scissor dissection Milligan-Morgan hemorrhoidectomy (n = 10). No significant difference was found in the postoperative pain score between the groups. On a scale of 0(More)
Axillary metastasis from carcinoma of an unknown primary site is an uncommon and difficult problem. When biopsy of an enlarged axillary node reveals adenocarcinoma, the most likely site (in a female patient) is the ipsilateral breast. From January 1977 to December 1986, 10 patients (eight female, two male) were treated at the University of Mississippi(More)
Changes in peripheral plasma catecholamines were studied during varying degrees of hypoxemia in fetal lambs of 95-140 days gestation. Epinephrine and norepinephrine concentrations were measured by radioenzymatic assay in plasma obtained simultaneously from the distal aorta and inferior vena cava in 15 chronically catheterized fetuses with the mother(More)
Little is known on aphid-induced emissions of volatile organic compounds (VOCs) from trees and particularly on their intraspecific variability in association with resistance traits. We compared VOC emissions from five peach cultivars (Prunus persica (L.) Batsch) and a wild relative (Prunus davidiana (Carrière) Franch) that differ in their level(More)
The purpose of the study was to determine if the use of incisional negative pressure therapy affected the rate of wound complications after acetabular fracture surgery. Between August 1996 to April 2005, 301 patients were found to have had an operatively treated acetabular fracture. There were 235 patients who had placement of incisional vacuum-assisted(More)
The case of a woman with autonomous aldosteronism, hypertension, and malignant ovarian tumour is reported. Hormone studies revealed high plasma aldosterone levels, and low plasma renin concentration. Following surgical removal of a malignant sex cord stromal tumour, the hyperaldosteronism regressed, and the hypertension improved. Subsequently the tumour(More)
Because of the significant mortality associated with the conventional surgical approach to abdominal aortic aneurysms (AAA) in the high risk patients and in those with ruptured aneurysms, we have developed a new approach to this problem, intraluminal aneurysm exclusion. This was achieved by an intraluminal prosthesis which approximated the diameter of the(More)