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1990 (1)
1974 (1)
1Author    OmP. Agrawal, Klaus SchellerRequires cookie*
 Title    Sclerotization of Insect Cuticle in a Cell-Free System  
 Abstract    Incubation o f deproteinized larval cuticle (chitin flakes) with purified arylphorin (calli-phorin) or larval haemolymph o f Calliphora vicina resulted in the formation o f a chitin-protein complex. Enzymatic oxidation o f N-ß-alanyldopam ine (N D A B) in the presence o f chitin flakes or the chitin-protein com plex, resulted in various degrees o f cross-linking o f N B A D -quinone formed with chitin. This study confirms the involvement o f arylphorin in the process o f quinone tanning o f insect cuticle. 
  Reference    Z. Naturforsch. 45c, 129—131 (1990); received October 4 1989 
  Published    1990 
  Keywords    Arylphorin, Chitin, Cuticle, Sclerotization, Calliphora 
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 TEI-XML for    default:Reihe_C/45/ZNC-1990-45c-0129.pdf 
 Identifier    ZNC-1990-45c-0129 
 Volume    45 
2Author    Gerhard HeideRequires cookie*
 Title    The Influence of Wingbeat Synchronous Feedback on the Motor Output Systems in Flies  
 Abstract    Action potentials have been recorded from fibrillar and from non-fibrillar flight muscles of tethered flying flies (Calliphora erythrocephala and M usca dom estica). Analyses of the spike-trains from the fibrillar muscles reveal a clear preference of the spikes to appear at a special phase with respect to the wingbeat cycle. This holds true even in cases of ex­ perim entally changed motor output patterns. There seems to be some kind of wingbeat-synchronous feedback which influences the output system phasically. Crosscorrelations between spike-trains from the fibrillar muscles on the one hand and the non-fibrillar muscles on the other give evidence that there are strong interactions between the output producing neurons of both systems with at least one inhibitory pathway. 
  Reference    (Z. Naturforsch. 29c, 739 [1974]; received August 2 1974) 
  Published    1974 
  Keywords    Calliphora, Musca, Insect Flight, Motor O utput, Flight Muscles, Electrophysiology 
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 TEI-XML for    default:Reihe_C/29/ZNC-1974-29c-0739.pdf 
 Identifier    ZNC-1974-29c-0739 
 Volume    29