Robin, J Berthiaume, L
Published in
Revue canadienne de biologie / éditée par l'Université de Montréal
Lymphocystis disease virus was highly purified from host cells by precipitation with PEG-6000 and isopycnic centrifugation in a metrizamide gradient. Metrizamide gradient centrifugation produce two distinct bands at equilibrium. As calculated from reconstruction experiments, only 4 and 0.3% respectively of the host DNA and the host proteins were re...
Kates, M Tremblay, P A
Published in
Revue canadienne de biologie / éditée par l'Université de Montréal
Lecithin does not exist in the marine diatom, Nitzschia alba, being completely replaced by phosphatidylsulfocholine (PSC), the sulfonium analogue of phosphatidylcholine (PC). Thus, the question arises: how can PSC effectively replace lecithin in a natural membrane? We have compared the physical properties of a homologous series of synthetic PSC's (...
Seufert, W D Lachiver, G Bessette, F
Published in
Revue canadienne de biologie / éditée par l'Université de Montréal
We discuss the various preparations of substitute pulmonary surfactant that have been proposed for the treatment of Respiratory Distress Syndrome in premature infants. We than submit some experimental results demonstrating that a preparation of phospholipids in an organic solvent can simulate the behavior of the naturally occurring pulmonary surfac...
Hamelin, C Poliquin, L Chung, Y S
Published in
Revue canadienne de biologie / éditée par l'Université de Montréal
Bazin, M Turcotte, H Lagacé, R Boutet, M
Published in
Revue canadienne de biologie / éditée par l'Université de Montréal
The permeability of aortic endothelium and myocardial capillaries was examined in 72 Sprague-Dawley rats (approximately 350 g) using the diffusion tracer peroxidase. Animals were subjected to cigarette smoke for periods of 1 day (acute effects), 2 weeks (sub-acute effects) and 15 weeks (chronic effects) and were sacrificed 5 minutes or 8 hours afte...
Rondeau, M Rouleau, M
Published in
Revue canadienne de biologie / éditée par l'Université de Montréal
Using semen from bull, boar and stallion as well as different spectrophotometers, we established the calibration curves relating the optical density of a sperm sample to the sperm count obtained on the hemacytometer. The results show that, for a given spectrophotometer, the calibration curve is not characteristic of the animal species we studied. T...
Bisaillon, J G Beaudet, R Lafond, L Saheb, S A Sylvestre, M
Published in
Revue canadienne de biologie / éditée par l'Université de Montréal
The antigonococcal and antibacterial spectra of bacterial isolates of the urogenital flora selected for their in vitro interference of Neisseria gonorrhoeae growth were determined on solid medium. A broad antigonococcal spectrum was found for all the selected isolates when they were tested against gonococcal virulent (T1) strains, penicillinase pro...
Campaña, H Suburo, A
Published in
Revue canadienne de biologie / éditée par l'Université de Montréal
Ganglion cells and their axons were studied in the retinas of chicken, quails and pigeons. Retinal flat mounts were examined with light microscopy after cresyl violet or silver impregnation procedures. Silver-impregnated specimens were also examined with scanning electron microscopy. Significant differences were observed between ganglion cells of t...
Pirlot, P
Published in
Revue canadienne de biologie / éditée par l'Université de Montréal
Using a volumetric method and the classical allometry equation, the author investigates the possibility of a relationship between the size of total brain or brain-components and the ecology of ethology of 29 marsupials species from South-America and Australia. He shows that there is a relation between brain and neocortex volumes, and the taxonomic ...
Cavalloro, R
Published in
Revue canadienne de biologie / éditée par l'Université de Montréal
The Mediterranean fruit fly, Ceratitis capitata Wiedemann, represents an extremely harmful insect pest of considerable agricultural and economic interest. As part of the study of this species, two diploid cell lines (2n = 12) of the Med-fly were established in vitro on two different culture media. The two lines were obtained from embryonic eggs 24 ...
