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1982 (1)
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1Author    F. Ojeda, M. Flores, H. FolchRequires cookie*
 Title      
 Abstract    The effect o f irradiation on the anti Ig binding ability o f lymphocytes after irradiation was studied. Norm al control and irradiated lym phoid cells were treated with rabbit anti mouse IgG fluorescein conjugated serum and the fluores­ cein positive cells compared. A reduction in the proportion o f stained cells in the irradiated lym phocytes was found. It depends on the dose and on the incubation tim e at 37 °C after irradiation. The m axim um effect was detected after 10 minutes o f incubation, longer incubation is associated with a partial recovery o f the stainability o f the IgG recep­ tors. 
  Reference    Z. Naturforsch. 34c, 888 (1979); received January 30 1979 
  Published    1979 
  Keywords    Lymphocytes, Receptors, Irradiation 
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 TEI-XML for    default:Reihe_C/34/ZNC-1979-34c-0888_n.pdf 
 Identifier    ZNC-1979-34c-0888_n 
 Volume    34 
2Author    SimonB. LaughlinRequires cookie*
 Title      
 Abstract    Intracellular recordings show that the receptors and second-order interneurons of the dragonfly compound eye change their sensitivity in response to maintained illumina­ tion. Comparison of receptor with interneuron shows that neural mechanisms act to ensure that the modulation of interneuron membrane potential that is set up by contrast changes is independent of background intensity. 
  Reference    (Z. Naturforsch. 30c, 306—308 [1975]; received January 3 1975) 
  Published    1975 
  Keywords    Dragonfly, Receptor, Interneuron, Light-adaptation 
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 TEI-XML for    default:Reihe_C/30/ZNC-1975-30c-0306_n.pdf 
 Identifier    ZNC-1975-30c-0306_n 
 Volume    30 
3Author    Frank Seela, Wolfgang WesemannRequires cookie*
 Title    Trägergebundene Serotoninderivate und Affinitätschromatographie synaptischer Membranproteine Resin Linked Derivatives of Serotonin and Affinity Chromatography of Proteins Isolated from Synaptic Membranes  
 Abstract    An affinity resin for the isolation of the serotonin receptor from nerve ending membranes was prepared by coupling tryptamine, 5-methoxy-tryptamine or serotonin to CNBr-activated Sepharose 4 B. The tryptamine derivatives, N-6-(aminohexyl)-tryptamines, were obtained by subsequent con­ densation of the corresponding indole derivatives with oxalyl chloride and t-aminocaproamide and reduction with L iA lH 4 . The 6-aminohexyl-group was used as spacer to link covalently the primary amino-group of tryptamine to agarose. — An extract of membrane proteins isolated from rat brain was resolved on this affinity resin into two fractions as compared with only one fraction using unsubstituted Sepharose 4 B. 
  Reference    (Z. Naturforsch. 29c, 248—256 [1974]; eingegangen am 2. Januar/15. Februar 1974) 
  Published    1974 
  Keywords    Affinity Chromatography, Receptor, Resin Linked Serotonin, Synaptic Membrane Proteins 
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 TEI-XML for    default:Reihe_C/29/ZNC-1974-29c-0248.pdf 
 Identifier    ZNC-1974-29c-0248 
 Volume    29 
4Author    WolfA. Kafka, Jürgen NeuwirthRequires cookie*
 Title    A Model of Pheromone Molecule-Acceptor Interaction  
 Abstract    Multiple binding interactions between odor molecules and acceptors are formulated by means of the Boltzmann statistics and intermolecular bond energies. Number, spatial arrangement and elec­ tronic properties of binding positions of the acceptor can be defined such that the specificity of sex pheromone receptors in male noctuid moths is quantitatively described. 
  Reference    (Z. Naturforsch. 30c, 278 [1975]; received November 8 1974) 
  Published    1975 
  Keywords    Receptor, Acceptor-sites, Binding Energy, Specificity, Pheromone 
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 TEI-XML for    default:Reihe_C/30/ZNC-1975-30c-0278.pdf 
 Identifier    ZNC-1975-30c-0278 
 Volume    30 
5Author    R. C. HardieRequires cookie*
 Title    E lectrophysiological Properties of R7 and R8 in D ipteran Retina  
 Abstract    Intracellular recording and dye injection have directly demonstrated the absolute and spectral sensitivities of R7 and R8 in the eye of Calliphora. R8 has major peak of sensitivity at 547 nm with less than half the bandwidth of a theoretical rhodopsin, and a subsidiary peak at 358 nm. R7 is confirmed as being an ultraviolet receptor. Both have absolute sensitivities similar to those of R l —6. These results are inconsistent with the scotopic (R l —6), photopic (R7 and R8) theory of fly vision. 
  Reference    (Z. Naturforsch. 32c, 887 [1977]; received August 29 1977) 
  Published    1977 
  Keywords    Diptera, Receptor, Central Rhabdomere, Spectral Sensitivity, Dye-injection 
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 TEI-XML for    default:Reihe_C/32/ZNC-1977-32c-0887_n.pdf 
 Identifier    ZNC-1977-32c-0887_n 
 Volume    32 
6Author    Michael Entzeroth, Lothar JaenickeRequires cookie*
 Title    von Blepharisma japonicum Structure-Activity-Relation of Analogues and Homologues of Blepharismone, the Low-M olecular Conjugation Hormone of Blepharisma japonicum  
 Abstract    Some functional derivatives o f blepharismone, the low-m olecular conjugation hormone o f Blepharisma japonicum, were synthesised and tested for their biological activity. The lipophilicity constant o f the substituent in 5-position o f the aromatic system directly correlates with the conjugation-inducing effect o f this substance. Any change in the N -form yl-position leads to com pounds less active than blepharismone, non-active or even inhibitory. Blepharismone-related kynurenine derivatives are inhibitors o f the gamone activity depending on structural relationship. 
  Reference    Z. Naturforsch. 37c, 1136—1140 (1982); received August 2/Septem ber 20 1982 
  Published    1982 
  Keywords    Blepharisma japonicu m, Blepharismone, Conjugation, Hormones, Receptors 
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 TEI-XML for    default:Reihe_C/37/ZNC-1982-37c-1136.pdf 
 Identifier    ZNC-1982-37c-1136 
 Volume    37 
7Author    R. C. Hardie, P. DuelliRequires cookie*
 Title    Properties of Single Cells in Posterior Lateral Eyes of Jumping Spiders  
 Abstract    Properties of single cells in the posterior lateral (PL) eyes of the jum ping spider Plexippus validus are described. Only one spectral class of cells was encountered and the spectra sensitivity was indistinguishable from that measured from the ERG , both peaking at ca. 535 nm. Angular sensi­ tivity (width of angular sensitivity function at the 50% level) averaged .89° ± .12°, the smallest value being .77°. Absolute sensitivity (reciprocal of the number of quanta of peak wavelength, on axis required to generate a 50% response) averaged 1.43 + 2 .5 X 1 0 -11 q _ 1 ,cm2,s. A ll cells studied were sensitive to the plane of polarised light. The per­ formance of receptors in the PL eyes is compared with that of receptors in the compound eyes of diurnal insects. It is concluded that the single lens eye system of spiders is in ­ herently superior in design to the insect compound eye. 
  Reference    Z. Naturforsch. 33c, 156—158 (1978); received November 8 1977 
  Published    1978 
  Keywords    Jumping Spiders, Receptors, Spectral Sensitivity, Angular Sensitivity, Absolute Sensitivity 
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 TEI-XML for    default:Reihe_C/33/ZNC-1978-33c-0156_n.pdf 
 Identifier    ZNC-1978-33c-0156_n 
 Volume    33