Growth Pattern and Environment: Differences in Growth of the Hard Tissues of the Heads of Wistar Rats Reared in Extremes of Litter-size |
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Page 1
... present from the moment of con- ception , that is not to say that the total information expresses itself constantly and in the same fashion throughout the life of the individual . Part of the genetic information present plays a role ...
... present from the moment of con- ception , that is not to say that the total information expresses itself constantly and in the same fashion throughout the life of the individual . Part of the genetic information present plays a role ...
Page 42
... present stages 6 and 7 ( see plate III ) . These films gave reasonably clear pictures of the mandible during a period of active growth . Films were chosen from each group at each stage for good quality of image and so pairs of films of ...
... present stages 6 and 7 ( see plate III ) . These films gave reasonably clear pictures of the mandible during a period of active growth . Films were chosen from each group at each stage for good quality of image and so pairs of films of ...
Page 59
... present one has not come to light . The present work confirms the findings of the above workers , that different forms of interference with the growth processes of an animal may be followed by distortion of the form of the head . It has ...
... present one has not come to light . The present work confirms the findings of the above workers , that different forms of interference with the growth processes of an animal may be followed by distortion of the form of the head . It has ...
Contents
GENERAL INTRODUCTION | 1 |
EXPERIMENT | 4 |
THE NATURE OF THE EXPERIMENTS | 9 |
5 other sections not shown
Common terms and phrases
adrenal glands angle animals behaviour birth body length body weight cages catch-up cephalometric x-rays cephalostat changes chapter compared correlation cranial base cranial capacity cranial vault cranium DATA LOCATION EXPERIMENT day after conception dental dimensions discussed effect environment environmental even-numbered rats experimental conditions experimental groups factors figs film formalin genetic Graph Means growth pattern histological hypothalamus incisor Incr increments indicated inter-group differences investigation large litters large-litter rats larger lead acetate less litter-size Log-Log Graph longitudinal studies M₁ mandible measurements mesio-distal method midsagittal plane molar segment Morphogenesis mother normal observations obtained occurred odd-numbered rats plane of nutrition points possible post-conception previous experiment Quantity random number records reduced relationship relative samples seen showed significant difference significantly small litters small-litter rats smaller sphenoid bone stage 9 standard deviations Student's t-test Table Longit tail taken undernutrition University of Nymegen variation weaning Widdowson and McCance Wistar rats x-ray pictures