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mechanical efficiency of exercise is reduced in acute hypobaric hypoxia ( 8, 20 ) or increased when breathing hypoxic gas mixtures ( 5 ) relative to lower equivalent altitudes. Findings are not consistent and discrepancies may be due to variations in exercise
variations of haematological parameters in athletes . Eur. J. Appl. Physiol . 111 , 9 – 16 ( 2011 ) 3. Bass DE , Buskirk ER , Iampietro PF , Mager M : Comparison of blood volume during physical conditioning, heat acclimatization and
gene and merle in the domestic dog: A continuum of insertion lengths leads to a spectrum of coat color variations in Australian Shepherds and related breeds . Cytogenet Genome Res. 156 , 22 – 34
variation in the bovine and ovine PRNP genes. Anim. Genet. 34 , 183–190. Williams J. L. Sequence variation in the bovine and ovine PRNP genes Anim. Genet
. Allen, P. J., Amos, W., Pomeroy, P. P. and Twiss, S. D. (1995): Microsatellite variation in grey seals show evidence of genetic differentiation between two British breeding colonies. Mol. Ecol. 4 , 653-662. Microsatellite
, H. R., Willich, S. N., Schreiber, C. és mtsai: Diurnal, weekly and seasonal variation of sudden death. Population-based analysis of 24,061 consecutive cases. Eur. Heart. J., 2000, 21 , 315
Simon, J. S., Karnoub, M. C., Devlin, D. J. és mtsa: Sequence variation in NPC1L1 and association with improved LDL-cholesterol lowering in response to ezetimibe treatment. Genomics, 2005, 86 , 648
The authors studied the present status of Hungarian indigenous sheep breeds based on the genetic background of scrapie resistance. The aim of this investigation was to estimate the relative frequency of prion haplotypes, genotypes and risk categories, as well as to reveal the efficiency of the scrapie eradication programme achieved over the last decade. A novel approach in the characterisation of prion by using its genic variation was also implemented. The authors established that the proportion of deleterious sites (%) can be a useful indicator of the eradication programme. Based on a large sample size, it was confirmed that the scrapie resistance of the Cikta breed is low, and the classification of this breed according to risk category has not improved. However, the frequent genotype ARQ and risk category 3 can also be considered characteristic of the breed. The careful use of these genotypes is permitted and will contribute to the maintenance of breed diversity. The response of prion genic variation to selection for scrapie resistance in the other breeds (Tsigai, Milking Tsigai, White Racka, Black Racka and Gyimes Racka) was definitely successful.
age . Ecol. Res. 10 , 351 – 357 . Cassinello , J. and Gomendio , M. ( 1996 ): Adaptative variation in litter size and sex ratio at birth in a sexually dimorphic ungulate
, Waterhouse J , Farrelly K , Fairhurst E : Diurnal variation in temperature, mental and physical performance, and tasks specifically related to football (soccer). Chronobiol. Int. 24 , 507 – 519 ( 2007 ) 19. Rodriguez C , Mayo JC , Sainz
