SYMPATHETIC CELLS: ALBINO RAT 305 
As shown in table 10, the female is smaller in size than the 
male at each age, the female at equal body weight must therefore 
be older, consequently the cells might have a slightly larger 
diameter as the result of age, but. the difference is small. It 
would be fair to say, therefore, that the cells, as well as the nuclei, 
as shown in chart 6, do indicate a sex difference although it is 
slight. 
This result supports in principle the earlier findings on the 
standards rats. 
TABLE 12 
To illustrate the way in which the ‘inbred’ differ from the ‘standard’ albino rats in 
respect of the diameters of the largest cervical sympathetic cells 
and their nuclei. Data from tables 1 and 11 
DIAMETERS 
AGE BODY WEIGHT 
Cells Nucleus 
ue Me 
89 122* DATE 12.95 Inbred albino rat 
124 129 28.80 13.40 Stock albino rat 
Terenoe PAIDSOUGCH. yo asa obtener —7.05 —0.45 
e IBETCENUADEH ase oe eae —32.0 —4.0 
123 i91 24.45 13.13 Inbred albino rat 
i7al 161 28.90 13.00 Stock albino rat 
OX saltities ts: samuel: —4.45 +0.13 
Banranee | Percentage pert seer oe efas 
*The values given are the average for the male and femaie in each instance. 
In table 12 is given a comparison of the diameters of the cells 
and nuclei of the inbred Albino with those of the stock albino 
rat. The data for the latter have been selected from tables 2 
and 11. The sexes are combined. | 
According to table 12, the inbred has its largest cells in the 
superior cervical sympathetic ganglion decidedly smaller than 
those in the stock albino rat of approximately the same body 
weight. The nucleus, however, shows only a little difference 
between the two forms, though this difference is in the same 
direction. 
