Growth Pattern and Environment: Differences in Growth of the Hard Tissues of the Heads of Wistar Rats Reared in Extremes of Litter-size |
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