CELLULAR EVENTS IN THE IMMUNE RESPONSE : ANALYSIS AND IN VITRO RESPONSE OF MOUSE SPLEEN CELL POPULATIONS SEPARATED BY DIFFERENTIAL FLOTATION IN ALBUMIN GRADIENTS

Cell suspensions from the spleens of normal mice or mice injected with sheep erythrocytes were separated on a discontinous bovine serum albumin density gradient. Four bands or subpopulations were obtained and were assayed for antibody-forming cells, and for antigen-sensitive precursor cells. The antibody-forming cells were assayed by the hemolytic plaque assay and the antigen-sensitive precursors were assayed by the number of plaque-forming cells which developed after 3 or 5 day's culture with antigen. It was found that both antibody-forming cells and their precursors were present in the denser region of the gradient when spleen cell suspensions were taken from unimmunized mice. In contrast, both antibody-forming cells and precursors floated to the top in cell suspensions from mice sacrificed 1, 2, or 3 days after antigen injection. The change in density was detectable as early as 12 hr and was complete by 18 hr. The cell which changed in density was specific for the antigen that brought about that change. The significance of these findings is discussed

The gender paradigm in domestic violence research and theory: Part 1—The conflict of theory and data

Abstract Feminist theory of intimate violence is critically reviewed in the light of data from numerous incidence studies reporting levels of violence by female perpetrators higher than those reported for males, particularly in younger age samples. A critical analysis of the methodology of these studies is made with particular reference to the Conflict Tactics Scale developed and utilised by Straus and his colleagues. Results show that the gender disparity in injuries from domestic violence is less than originally portrayed by feminist theory. Studies are also reviewed indicating high levels of unilateral intimate violence by females to both males and females. Males appear to report their own victimization less than females do and to not view female violence against them as a crime. Hence, they differentially under-report being victimized by partners on crime victim surveys. It is concluded that feminist theory is contradicted by these findings and that the call for bqualitativeQ studies by feminists is really a means of avoiding this conclusion. A case is made for a paradigm having developed amongst family violence activists and researchers that precludes the notion of female violence, trivializes injuries to males and maintains a monolithic view of a complex social problem.

The gender paradigm in domestic violence research and theory: Part 1—The conflict of theory and data

Abstract Feminist theory of intimate violence is critically reviewed in the light of data from numerous incidence studies reporting levels of violence by female perpetrators higher than those reported for males, particularly in younger age samples. A critical analysis of the methodology of these studies is made with particular reference to the Conflict Tactics Scale developed and utilised by Straus and his colleagues. Results show that the gender disparity in injuries from domestic violence is less than originally portrayed by feminist theory. Studies are also reviewed indicating high levels of unilateral intimate violence by females to both males and females. Males appear to report their own victimization less than females do and to not view female violence against them as a crime. Hence, they differentially under-report being victimized by partners on crime victim surveys. It is concluded that feminist theory is contradicted by these findings and that the call for bqualitativeQ studies by feminists is really a means of avoiding this conclusion. A case is made for a paradigm having developed amongst family violence activists and researchers that precludes the notion of female violence, trivializes injuries to males and maintains a monolithic view of a complex social problem.

Children's media cultures in comparative perspective

This handbook offers a comprehensive overview of the complexity and diversity of audience studies in the advent of digital media

The state of the Martian climate

60°N was +2.0°C, relative to the 1981–2010 average value (Fig. 5.1). This marks a new high for the record. The average annual surface air temperature (SAT) anomaly for 2016 for land stations north of starting in 1900, and is a significant increase over the previous highest value of +1.2°C, which was observed in 2007, 2011, and 2015. Average global annual temperatures also showed record values in 2015 and 2016. Currently, the Arctic is warming at more than twice the rate of lower latitudes