Results 241 to 250 of about 95,324 (292)

Epithelial locomotion and differentiation in frog skin cultures

Tissue and Cell, 1984
Small explants from the medioventral skin of the green frog were maintained in culture for 5 days. During the first hours, a rapid outgrowth of the stratum germinativum was observed at the periphery of the fragment (2 X 3 X 0.75 mm). The Malpighian cells stretched and emitted long lamellipodia following the cut edges of the dermis. These cells acquired
J P, Denefle, J P, Lechaire
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Localization of pigment cells in cultured frog skin

American Journal of Anatomy, 1990
AbstractThe pigmentation pattern of ventral skin of the frog Rana esculenta consists mainly of melanophores and iridophores, rather than the three pigment cells (xanthophores, iridophores, and melanophores) which form typical dermal chromatophore units in dorsal skin. The present study deals with the precise localization and identification of the types
J P, Denefle, J P, Lechaire
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Nonreplicating Cultures of Frog Gastric Tubular Cells

1979
Publisher Summary This chapter discusses the structure, function, and longevity of the mammalian gastric mucosal chief and oxyntic cells and their amphibian counterpart, the frog gastric tubular cells. The acid secretory cell of the frog gastric mucosa, usually referred to as the oxyntic or parietal cell, is the phylogenetic precursor of the ...
G H, Blumenthal, D K, Kasbekar
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Action of Light on Frog Pigment Cells in Culture

Pigment Cell Research, 1990
Solar radiation induces numerous biologic effects in skin but the mechanism underlying these responses is poorly understood. To study the etiology of these phenomena, we investigated the effect of light on cultured Xenopus laevis melanophores. Visible light stimulated a marked increase in intracellular cAMP levels within the first minute of irradiation.
A, Daniolos, A B, Lerner, M R, Lerner
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NMDA receptors on adult frog spinal motoneurons in culture

Neuroscience Letters, 1994
Whole-cell membrane currents induced by superfusion of NMDA were examined in cultured motoneurons from the spinal cord of the adult frog in Mg(2+)-free Ringer solution containing 10 microM glycine. The amplitude of the response to 100 microM NMDA was 280 +/- 37 pA (mean +/- S.D.; n = 24) with a reversal potential +6.1 +/- 3.0 mV (mean +/- S.D.; n = 6).
S, Skatchkov, C, Brösamle, L, Vyklický, D P, Kuffler, R K, Orkand   +4 more
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Frog melanophores cultured on fluorescent microbeads: biomimic-based biosensing

Biosensors and Bioelectronics, 2005
Melanophores are pigmented cells in lower vertebrates capable of quick color changes and thereby suitable as whole cell biosensors. In the frog dermis skin layer, the large and dark pigmented melanophore surrounds a core of other pigmented cells. Upon hormonal stimulation the black-brown pigment organelles will redistribute within the melanophore, and ...
Tony P M, Andersson, Daniel, Filippini, Anke, Suska, Therese L, Johansson, Samuel P S, Svensson, Ingemar, Lundström   +5 more
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Some Observations in Frog Culture

Transactions of the American Fisheries Society, 1911
(1911). Some Observations in Frog Culture. Transactions of the American Fisheries Society: Vol. 40, No. 1, pp. 289-292.
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Macrophages direct process elongation from adult frog motorneurons in culture

Proceedings of the Royal Society of London. Series B: Biological Sciences, 1991
Motorneurons and macrophages have been isolated and identified in primary cultures from adult frog (Rana pipiens) spinal cord. Time-lapse video microscopy revealed that during the first two weeks migrating macrophages contact the growth cones of motorneurons.
B, Stolz, S D, Erulkar, D P, Kuffler
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Potassium currents in cultured glia of the frog optic nerve

Glia, 1996
The processes that participate in clearing increases in [K+]o produced by active neurons include KCl uptake, Na pump stimulation, and spatial buffering. The latter process requires glial cells to carry: 1) inward K+ currents in regions where K+ is elevated at a glial membrane potential more negative than EK; and 2) outward K+ currents at normal K+ and ...
M, Philippi, L, Vyklicky, R K, Orkand
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Cultivation of Monolayer Cultures of Frog Renal Cells

Nature, 1961
CONSIDERABLE evidence has been accumulated by Lucke1, Duryee2, Rose3, Tweedell4, and others for an agent which induces an organ-specific adenocar-cinoma in the kidney of the leopard frog, Rana pipiens. Lucke1 has postulated that this agent is probably of a viral nature.
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