Results 161 to 170 of about 2,790 (209)

Simple Photoreceptors in Limulus polyphemus

Science, 1966
The "olfactory nerve," the endoparietal eye, and the rudimentary lateral eyes of Limulus (polyphemus) contain simple photoreceptor cells that duplicate many of the electrical responses of the retinular cells of the lateral eye; the responses are a receptor potential consisting of an initial transient phase and a subsequent steady phase, low-amplitude ...
R, Millecchia, J, Bradbury, A, Mauro
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In Depth Exploration of the Hemolymph of Limulus polyphemus via Combinatorial Peptide Ligand Libraries

Journal of Proteome Research, 2010
The hemolymph of Limulus polyphemus, a very ancient marine arthropod dating back to ca. 440 million years, has been explored in depth via capture by combinatorial peptide ligand libraries. Whereas barely a dozen proteins had been known up to the present,
Alfonsina D’Amato, Angela Bachi, Pier Giorgio Righetti   +2 more
exaly   +2 more sources

Telson reflex habituation in Limulus polyphemus..

Journal of Comparative and Physiological Psychology, 1975
Muscle correlates of reflex telson movement were recorded in intact Limulus (horseshoe crab) preparations with chronically implanted microelectrodes. Muscle activity habituated during repetitive tactile stimulation of the gills with puffs of air. Dishabituation was also observed, as were inverse relationships between the frequency and intensity of ...
R, Lahue, L, Kokkinidis, W, Corning
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MATING IN LIMULUS POLYPHEMUS

The Biological Bulletin, 1933
Homogamy, the tendency of like to mate with like, has been definitely established for several plants and animals. A general account especially from the plant side has been given by D. F. Jones (1928). Willoughby and Pomerat (1932) have summarized the zoological findings. In a study by H. E.
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Ultrastructure of the neurogenic heart of Limulus polyphemus

Zeitschrift f�r Zellforschung und Mikroskopische Anatomie, 1971
The ultrastructure of Limulus cardiac muscle was examined. The hearts were fixed in situ by perfusion with isotonic glutaraldehyde solution while in relaxed, contracted, or stretched states. The sarcomeres are relatively long, varying in length from about 2.5 to 6.6 μ. The average A-band length is 2.46 μ.
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Electron microscopy of a hemagglutinin from Limulus polyphemus

Journal of Molecular Biology, 1968
Macromolecular ring shaped components corresponding to hemagglutinin studied in Limulus polyphemus hemolymph by electron ...
H, Fernández-Morán, J J, Marchalonis, G M, Edelman   +2 more
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Subunit association and heterogeneity of Limulus polyphemus hemocyanin

Biochemistry, 1978
The molecular weights of the 6S, 24S, 36S, and 60S components of Limulus polyphemus hemocyanin were determined by high speed sedimentation equilibrium to be 69 400, 856 000, 1 690 000, and 3 160 000. The behavior of this hemocyanin appears to be similar to that of other arthropod hemocyanins where the first aggregation step is the formation of a ...
M L, Johnson, D A, Yphantis
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A kinetic characterization of choline esterases in Limulus polyphemus

Comparative Biochemistry and Physiology Part C: Comparative Pharmacology, 1977
Abstract 1. Kinetic analyses confirmed the existence of different esterase activities in extracts from the ventral nerve cord and cardiac muscle of Limulus. 2. On the basis of sensitivity to selective inhibitors and substrate specificity both esterases behave as “true” acetylcholinesterase. 3. In contrast to lobster axonal acetylcholinesterase, the
J G, Townsel, H E, Baker, T T, Gray
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The ultrastructure of striated muscle from Limulus polyphemus

Journal of Ultrastructure Research, 1961
The fine structure of Limulus polyphemus skeletal muscle has been studied with the electron microscope. The striations were found to consist of A, I and Z bands only; no M lines, H zones, or other striations were observed. In addition mitochondria, sarcolemma, and sarcoplasmic reticulum were figured and described. The myofilament structure seemed to
G W, DE VILLAFRANCA, D E, PHILPOTT
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Mass Spectrometric Characterization of Limulus polyphemus Hemocyanin

Biochemical and Biophysical Research Communications, 1999
Electrospray ionization-mass spectrometry of ion-exchange and reverse-phase purified hemocyanin from Limulus polyphemus revealed six predominant isoforms with molecular weights ranging from 71,730 to 72,695 Da. The heaviest of these agreed closely with the molecular weight calculated for the previously determined Edman sequence with substitution of ...
J, Maddaluno, K F, Faull
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