Chromosomes and giemsa-bands of the Idaho spotted ground squirrel,Spermophilus brunneus (Howell)

-Spermophilus brunneus . , 13 18 ,S. brunneus S. townsendii mollis (2n=38) , , ; ;S. brunneus . S. brunneus , Spermophilus.

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Supported by National Science Foundation Grants No. GB32114X and No. GB 29131X, and the Sprague Foundation. We thankD. Pozin for technical assistance.     

X-ray research of polycrystals. X-ray diffraction methods for precision determinations of polycrystal lattice parameters over unsolved double lines

. - .     

Extrapyramidal pathways with monosynaptic effects upon primate α-motoneurons

, , , , , -.     

Study of neurosecretory cells ofHelix pomatia by intracellular dye injection

#x043E; , . , .     

Antihypertensive effect of Co-factors of the synthesis and precursors of nucleic acids in experimental hypertension

, ₁₂, .     

Artificial lung ventilation during diaphragmatic paralysis

ÿe , CO₂ . CO₂ ÿe . , ÿe , .     

Monoamine oxidase activity in membrane structures of rat liver cell

, .     

The peculiarities of capacitance vessel reflex responses

Conclusion Changes of the vessel capacity resulted from the pressor synocarotid reflexes, intestinal chemoreflexes and reflexes from the right atrium or ventricle and electric stimulation of the somatic nerve afferents can be either similarly or differently directed as compared with the responses of the resistance vessels.

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, , , .

     

Reactive synthesis of DNA and mitotic division in atrial heart muscle cells following ventricle infarction

/- 5 - / . , .     

Mass spectrometric determination of the amino acid sequence in arginine-containing peptides

aa, a-a a- a aa - aa a -a .     

Mass spectrometric determination of the amino acid sequence in cystine- and cysteine-containing peptides

, - , , S-- S- .     

The role of the pentose-phosphate pathway in adjustment of the heart to a high load and the development of myocardial hypertrophy

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DNA synthesis and mitoses in atrial myocytes of rats with aortal stenosis

, . 2- , 1,60 ±0,59% , 0,96 ± 0,44% — . ë . , ³- .     

Recovery of isometric twitches after glycerol removal

1. , 110–220 , . 2. , . 3. .

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We thank Dr.G. A. Nasledov, Sechenov Institute of Evolutionary Physiology and Biochemistry, Leningrad, for kind permission to use his device for experiments with isolated muscle fibres.     

Changes in the lumen of coronary vessels under oligemic hypotension

Conclusions The decrease of circulating blood volume, resulting in oligemic hypotension, may evoke in anaesthetized cat the active constrictory coronary vessel responses of 2 types, one occuring immediately after start of the hypotension and the other having a significantly prolonged latency.

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, , , , ( 4 ), ( 45 ).

     

Chromosomes and some issues of the evolution of the ground squirrel genusCitellus (Rodentia: Sciuridae)

Citellus (s. str.) relictus, C. dauricus C. pygmaeus (2=36, NF=72). . (Colobotis) erythrogenys . fulvus -. . (Urocitellus) undulatus (2n=32, NF=64) . columbianus. Citellus, , Citellus, . , .     

The mechanism of blood vessel permeability derangement under the influence of histamine,serotonin and bradykinin

, , , , 10^–2-10^–3M NaCN . (, ). .     

Correlation between sensitivity to trypaflavine and DNA base composition in mutants ofBacterium paracoli 5099

Bacterium paracoli 5099 , , .     

Inhibition of EMC virus reproduction and prevention of cell death by amino acid analogues and puromycin

L- , .D, L--2- (, 50%). , , . , .     

Structural transformation reactions of anthocyanins

Summary Spectroscopic evidence shows that the flavylium cation (1) undergoes hydroxylation to form the carbinol base (2) and can also deprotonate to form the anhydro (quinonemethane) bases (3a and3b). The anhydro bases hydrate to the carbinol base. The carbinol base above pH 6, or the ionzed carbinol base (2a), undergoes diring fission to produce the cischalcone (4).The editors do not hold themselves responsible for the opinions expressed in the authors' brief reports. — Les auteurs sont seuls responsables des opinions exprimées das ces brèves communications. — Für die Kurzmitteilungen ist ausschliesslich der Autor verantwortlich. — Per le brevi comunicazioni è responsabile solo l'autore. — ë . — Solo los autores son responsables de las opiniones expresadas en estas comunicationes breves.Acknowledgment. This research was supported by a grant from the Welch Food Co., Westfield, NY.