This study dealing with the brain of the monkey is part of a research program carried on in the Laboratory of Comparative Neurology at the University of Michigan. The writer wishes to thank the A. B. Brower anld E. R. Arn Research and Scholarship Fund, made available through the Dean of the Medical School, for the generous grant which made possible the present work. The author also expresses hi...

1. Phagocytosis of pneumococci in vitro runs parallel with phagocytosis in vivo. 2. Virulence depends not only on resistance to phagocytosis, but also on the ability to grow in the body of the animal. 3. The biological reaction of the pigeon to pneumococcus infection does not differ from that of the mouse. 4. The "immunity" of the pigeon to pneumococcus infection is due to its normal high tempe...

Actinomycin D has been tested on mouse tu mors, with varying degrees of success, as an anti-neoplastic agent. Dramatic inhibition of some ascites (mouse) tumors has been reported by Sugiura (14) and Gregory et al. (6). Reilly (11) and Sugiura (14) are in agreement that actino-mycin D has slight antineoplastic activity against S-180, and Farber (3) demonstrated antitumor activity against the mal...

In summarizing the findings of this paper it may be said that degenerative changes have been noted in practically every parenchymatous organ. Among these the most striking has been that of serous imbibition by the most active cells of these organs. In regard to the changes in the glands of internal secretion, the findings corroborate the statements of Cushing in regard to hypophysectomy, that r...

It has been our aim to determine in what particular the blood is altered during tetany so that it can produce hyperexcitability of the motor nerves. As a working hypothesis it has been assumed that (1) there may be a lack of calcium in the blood and tissues; (2) there may be a circulating poison which like an oxalate could render inactive the circulating calcium; and (3) there may be a substanc...

As we move towards micron-scale rapid manufacturing, it is critical to understand build resolution of Stereolithography technology. In order to determine the resolution limitations, positive and negative features on Stereolithography parts were built and analyzed. Results from several experiments were compared to an analytical model and important resolution issues are highlighted. Based on thes...

Though the presence of vasa vasorum in the walls of arteries and veins has been recognized for almost 200 years, relatively little is known about their precise function and their r6le in vascular repair. There has been much controversy in the literature as to whether there is a causal relationship between disease of the vasa and of the parent vessels, or whether alterations in the vasa are seco...

Laboratory magnetic reconnection experiments have been performed for nearly 20 years. Elegant experiments by Stenzel and Gekelman @R. L. Stenzel and W. Gekelman, Phys. Rev. Lett. 42, 1055 ~1979!; W. Gekelman and R. L. Stenzel, Phys. Rev. Lett. 54, 2414 ~1985!# focused on the measurement of field quantities with a single movable probe in a highly reproducible plasma. Observations included a very...

Experimental Approaches in Migration Studies The decision of whether or not to migrate has far-reaching consequences for the lives of individuals and their families. But the very nature of this choice makes identifying the impacts of migration difficult, since it is hard to measure a credible counterfactual of what the person and their household would have been doing had migration not occurred....