Vol. 23, No. 4

Contents: The Injured Public Employee: Accidental Injuries in the Public Sector Workplace, by Arnold G. Rubin Recent Developments Further References, compiled by Yoo-Seong Songhttps://scholarship.kentlaw.iit.edu/iperr/1036/thumbnail.jp

SPECIFIC HETEROLOGOUS ENHANCEMENT OF IMMUNE RESPONSES : IV. SPECIFIC GENERATION OF A THYMUS-DERIVED ENHANCING FACTOR

In short-term cultures of thymocytes from tetanus toxoid-immunized mice, the addition of 1 ng of toxoid generated the release of a soluble factor which was capable of enhancing the immune response to a heterologous immunogen. The addition of supernatants from such cultures to assay cultures of sheep erythrocyte-stimulated normal spleen cells produced a significant augmentation of the hemolytic plaque response. Culture fluid from similar cultures of normal thymocytes or primed thymocytes cultured without the priming antigen were inactive. The enhancing factor was nondialyzable, heat stable (56°C, 30 min), resistant to DNAse and RNAse, but was inactivated by protease. A factor produced by specifically stimulated primed spleen cells had similar characteristics. In toxoid-stimulated, mixed cell cultures containing primed thymocytes or spleen cells and normal spleen cells, tenfold fewer thymocytes than spleen cells were needed to produce a comparable degree of enhancement of the anti-sheep erythrocyte plaque-forming cell response

On optical forces in spherical whispering gallery mode resonators

In this paper we discuss the force exerted by the field of an optical cavity on a polarizable dipole. We show that the modification of the cavity modes due to interaction with the dipole significantly alters the properties of the force. In particular, all components of the force are found to be non-conservative, and cannot, therefore, be derived from a potential energy. We also suggest a simple generalization of the standard formulas for the optical force on the dipole, which reproduces the results of calculations based on the Maxwell stress tensor.Comment: To pe published in Optics Express Focus Issue: "Collective phenomena in photonic, plasmonic and hybrid structures