The effects of age and low-intensity endurance exercise on the contractile properties of single skinned fast- and slow-twitch skeletal muscle fibres [0.03%]
年龄和低强度耐力运动对单个快慢肌纤维收缩特性的影响
G S Lynch,B J Rodgers,D A Williams
G S Lynch
Aged (25 month old) rats were subjected to a low-intensity exercise programme, consisting of 10-weeks endurance swimming. At the conclusion of training (at the age of 27 months), fresh single skinned muscle fibres were prepared from the ext...
The gastric groove, a specific adaptation to nutritional ontogeny in eutherian mammals [0.03%]
胎盘哺乳动物胃沟的特定适应性营养发育现象
P Langer
P Langer
In this paper grooves or groove-like structures along the lesser gastric curvature in 19 eutherian mammal species are classified according to their muscular architecture and according to mucosal differentiations. It is shown that the differ...
Comparative Study
Growth, development, and aging : GDA. 1993 Fall;57(3):139-46. DOI: 1993
The effect of a feature of regression disturbance on the efficiency of fitting growth curves [0.03%]
回归干扰的一个特征对拟合生长曲线效率的影响
H Pasternak,B A Shalev
H Pasternak
Growth curve parameters are usually estimated by employing non-linear regression. In the present study this method was found to be inefficient for fitting growth curves, since the magnitude of random deviations of body weight greatly increa...
Genetic control of the decline of natural killer cell activity in aging mice [0.03%]
基因控制衰老小鼠自然杀伤细胞活性的降低
N Mikael,N M Mirza,B I Zaharian et al.
N Mikael et al.
NK cell activity declines with age and is strain dependent. We investigated the age associated decline of NK cell activity in the HW26C strain of mice. The bilineal congenic strain HW26C which contains a segment of chromosome 4 of BALB/cBy ...
Comparative Study
Growth, development, and aging : GDA. 1994 Spring;58(1):3-12. DOI: 1994
Ontogeny of immunocytochemically demonstrable androgen- and androgen receptor-containing cells in the hypothalamus and adenohypophysis of the chick embryo [0.03%]
鸡胚胎下丘脑和腺垂体中免疫细胞化学上可鉴定的雄激素和雄激素受体含细胞的发育起源
J E Woods,C M Blandin,R C Thommes
J E Woods
Brain sections of male chick embryos, 6.5-18.5 days of age, were examined immunocytochemically for the presence of androgen- and androgen receptor-containing cells in the hypothalamus and adenohypophyseal pars distalis. Using antibodies (Ab...
Experimental perturbation of the development of sexual size dimorphism in the mouse skeleton [0.03%]
实验干扰小鼠骨骼性尺寸二态性发育的研究
K R Gordon,C Levy,M Perl et al.
K R Gordon et al.
BALB/c mice were raised for 30 days under nine treatment regimens to determine their effects on sexual dimorphism for size of the femur and of the body. Treatment groups were divided into three experiments: 1) burrowing in a high litter cag...
Comparative Study
Growth, development, and aging : GDA. 1994 Summer;58(2):95-104. DOI: 1994
Dependence of increased linear bone growth on age at oMT1a-oGH transgene expression in mice [0.03%]
小鼠线性骨增长增加与oMT1a-oGH转基因表达年龄的关系
A M Oberbauer,D Pomp,J D Murray
A M Oberbauer
We have previously shown that growth hormone (GH) accelerates the rate and extends the duration of linear bone growth in a GH-transgenic mouse model. To determine if this GH effect was temporally regulated, bone lengths and growth plate wid...
U Gille,F V Salomon
U Gille
Growth of body and heart weight in drakes was measured to 154 days of age in Mallards, 2 lines of White Pekins (Anas platyrhynchos), Muscovys (Cairina moschata), and a Muscovy x White Pekin cross. Allometric heart growth was slightly negati...
The effect of age on phosphatidylinositol kinase, phosphatidylinositol phosphate kinase and diacylglycerol kinase activities in rat brain cortex [0.03%]
年龄对大鼠大脑皮质磷脂酰肌醇、磷脂酰肌醇磷酸和二酰基甘油激酶活性的影响
J Bothmer,M Mommers,M Markerink et al.
J Bothmer et al.
A previous study, in which a lysed fraction was used with endogenous phospholipids as substrate, revealed age-related changes in PA and PIP2 formation but not in PIP formation (Bothmer et al., Neurochem. Int. 21, 223-228, 1992). To rule out...
Effect of yolk sac removal at hatch on growth and feeding behavior in lines of chickens differing in body weight [0.03%]
出壳时去除卵黄囊对不同体重视角鸡系生长和摄食行为的影响
I Turro,E A Dunnington,Z Nitsan et al.
I Turro et al.
Influence of residual yolk on growth, feeding behavior, and development of certain internal organs during the first week after hatch were measured in lines of chickens that had undergone long-term selection for high (HW) or low (LW) 56-day ...
Comparative Study
Growth, development, and aging : GDA. 1994 Summer;58(2):105-12. DOI: 1994