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Investigations into the free-living phase of the cat hookworm life cycle
Laboratory studies were undertaken to evaluate the role of environmental factors on the development of free-living stages of the cat hookworm Ancylosto...
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Migration Patterns of Avian Embryonic Bone Marrow Cells and Their Differentiation to Functional T and B Cells
Previous studies by Moore and Owen (1,2) as well as more recent experiments with interspecific chimeras (3,4) support the concept that blood-borne...
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Two Main Features of T-Cell Development: Thymus Traffic and Postthymic Maturation
One of the many reasons for the sustained interest in the ontogeny of T cells in mammals is the expectation that the process of adult differentiation...
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The penetration of Fascioloides magna miracidia into the snail host Fossaria bulimoides
Snails of the species Fossaria bulimoides were exposed to miracidia of Fascioloides magna for given periods of time. The course of penetration was...
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The ageing process in infective larvae of the roundworms Haemonchus contortus and Nippostrongylus brasiliensis: Carbohydrate content
Trehalose, glycogen and traces of glucose were the only anthrone sensitive carbohydrates identifiable. The variation of 13–22% of the dry weight in...
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The effects of temperature on the survival and development of the free living stages of twisted wireworm Haemonchus contortus rudolphi, 1803 of sheep and other ruminants
The effects of temperature on the survival and development of Haemonchus contortus have been studied using agar cultures inoculated with pure...
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Origin, Distribution and Differentiation of IgA-Producing Cells
A large body of experimental data relating to the ontogeny of cells capable of IgA synthesis has been obtained in diverse species over the past few...
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Studies on the Nature of Germinal Centers
At the end of the first germinal center conference, several questions were placed squarely in focus. Four of these seemed particularly to demand an...
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Hemopoietic Origin of B Cells in the Mouse
T cells are produced in mice by passage of hemopoietic stem cells derived from bone marrow (1,2) and also embryonic liver, blood or yolk sac (3)...
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The ultrastructure of the intestine of Ascaris suum larvae
The intestine of the infective larva consisted of a solid column of seven cells with no lumen. The cells, which seemed to be enzymatically inactive...
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Immune Competence of Cells Derived from Hemopoietic Liver after Traffic to Thymus
We have shown in a previous communication that hemopoietic liver cells from 17–19 old mouse embryos are capable of migration to thymus and bone...
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Zur Physiologie invasionsfähiger Larven der Trichostrongylidae
The oxygen consumption of the infective third stage larvae of some species of trichostrongylids parasitizing ruminants was studied by means of Warburg's...
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Vitellogenesis and eggshell formation in Caryophyllaeus laticeps (Pallas) and Caryophyllaeides fennica (Schneider) (Cestoidea: Caryophyllaeidea)
Eggshell formation in Caryophyllaeus laticeps and Caryophyllaeides fennica (Cestoidea: Caryophyllaeidea), as shown by histochemical tests for...
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Developmental Suppression of Germinal Center and IgG Production by Prednisolone and 6-Mercaptopurine
During development of the immunoglobulin-producing system of cells in chickens, there is a sequential onset of immunoglobulin synthesis; IgM is...