AUTHOR’S ABSTRACT OF THIS PAPER ISSUED 
BY THE BIBLIOGRAPHIC SERVICE, JUNE 27 
ON THE GROWTH OF THE LARGEST NERVE CELLS IN 
THE SUPERIOR CERVICAL SYMPATHETIC GAN- 
GLION OF THE ALBINO RAT—FROM BIRTH TO 
MATURITY 
CHI PING 
The Wistar Institute of Anatomy 
SIX CHARTS AND ONE PLATE 
INTRODUCTION 
- This paper contains observations on the largest nerve cells in 
the superior cervical sympathetic ganglion of the albino rat. 
The purpose of this study is to trace the growth of these cells 
by their increase in diameter in relation to the age and size of the 
animal. In order to compare the possible differences in 
growth in the sympathetic nerve cells due to sex, a male and a 
female rat of each age were used throughout the series of 
observations. 
The author desires to express his sincere appreciation and 
gratitude to Dr. M. J. Greenman for granting him the privileges 
and facilities of the Institute for this investigation, and to Dr. 
H. H. Donaldson, under whose direction the work was carried on 
and whose valuable advice and guidance enabled him to formu- 
late his results. 
MATERIAL 
The material used for this investigation consisted of sixteen 
pairs of albino rats, of known ages, from 1 to 365 days. Besides 
these, two females of 540 days and 570 days, respectively, were 
used for comparison. All these were obtained from the animal 
colony at The Wistar Institute and belonged to the so-called 
‘standard strain.’ In selecting the specimens, five-day intervals 
were taken between each two ages from birth to thirty days, 
but from this age onward greater intervals were used. The 
body weight, body length, sex, and age of each rat were recorded. 
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