ISSN:
1432-1351
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Medicine
Notes:
Summary Differential counts of the leucocytes of adult newts,Notophthalmus viridescens, maintained in constant darkness and at a temperature of 11.0∓0.5 ° C, were made at eight times during circadian periods. The relative numbers of white cells varied only slightly through these solar-days (Table 1). However, in animals living under the same constant conditions and injected during one of four different periods of 24-hour days with bovine ACTH, the levels of increases in neutrophils evoked by treatment with the hormone varied with solar frequency (Table 2). Decreases in lymphocytes, also apparent in ACTH-treated newts, were of similar degrees during 24-hour days (Table 2). The circadian changes in the severity of neutrophilia are discussed in relation to other cycles known forNotophthalmus.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00696192
