906 resultados para Zoology, Medical


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Accompanied by "Supplement 1- " (v. 24 cm.) Published: Washington, U.S. Govt. Print. Off., 1953-

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The subject portion of this Index-catalogue is being issued in the series of Bulletins of the Hygienic laboratory, Public health and marine-hospital service, Treasury dept.

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The subject portion of this index-catalogue is being issued in the series of Bulletins of the Hygienic Laboratory, Public Health and Marine- hospital Service, Treasury Dept.

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At head of title: Travail du Laboratoire de parasitologie de la Faculté de médecine de Paris.

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At head of title: Treasury Department. United States Public Health Service.

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Atlas and text bound together.

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Extract from The World's work, May, 1909.

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"Must be used with the author catalogue [Index-catalogue of medical and veterinary zoology: authors, of the U.S. Bureau of Animal Industry, Zoological Division] ... the bibiliographical key."

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Mode of access: Internet.

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Mode of access: Internet.

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Mode of access: Internet.

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Description based on: 22, pt. 1, published in Dec. 1978.

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Male squid produce intricate spermatophores that, when transferred to the female, undergo the spermatophoric reaction, a complex process of evagination that leads to the attachment of the spermatangium, that is, the everted spermatophore containing the sperm mass. While this process is still not completely understood, the medical literature includes several reports of "oral stinging" (i.e., punctured wounds in the human oral cavity) following consumption of raw male squid, which contains undischarged spermatophores able to inflict such wounds. Here, we revisit a recent medical report of oral stinging by Shiraki et al. (Pathol Int 61:749-751, 2011), providing an in-depth reanalysis of their histological biopsies and revealing vital information on the functioning of squid spermatophores. The morphology of the spermatangia attached within the oral cavity is similar to the condition found in spermatangia naturally attached to female squids. The spermatangia were able to superficially puncture the superficial layers of the oral stratified squamous epithelium, and numerous, minute stellate particles from the squid spermatophore were found adhered to the oral epithelium. These findings corroborate previous hypotheses on the functioning of squid spermatophores, namely that spermatophore attachment generally involves tissue scarification, and that stellate particles play a vital role in the attachment process. Moreover, spermatophore attachment is confirmed to be autonomous (i.e., performed by the spermatophore itself) in another squid species (possibly a loliginid), and the results strongly indicate that the attachment mechanism is not dependent upon a specialized epithelium, nor a mate's specific chemical stimulus. From the pathological point of view, the best prophylactic measure at present is the removal of the internal organs of the raw squid prior to its consumption.

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Literature on bird spider or tarantula bites (Theraphosidae) is rare. This is astonishing as they are coveted pets and interaction with their keepers (feeding, cleaning the terrarium or taking them out to hold) might increase the possibility for bites. Yet, this seems to be a rare event and might be why most theraphosids are considered to be harmless, even though the urticating hairs of many American species can cause disagreeable allergic reactions. We are describing a case of a verified bite by an Indian ornamental tree spider (Poecilotheria regalis), where the patient developed severe, long lasting muscle cramps several hours after the bite. We present a comprehensive review of the literature on bites of these beautiful spiders and conclude that a delayed onset of severe muscle cramps, lasting for days, is characteristic for Poecilotheria bites. We discuss Poecilotheria species as an exception from the general assumption that theraphosid bites are harmless to humans.