0003-3472 2013 The Authors. Published on behalf http://dx.doi.org/10.1016/j.anbehav.2013.10.003 Distractive marks have been suggested to prevent predator detection or recognition of a prey, by drawing the attention away from recognizable traits of the bearer. The white ‘comma’ on the wings of comma butterflies, Polygonia c-album, has been suggested to represent such a distractive mark. In a lab...

The COMMA-Dbeta-geo cell line has been shown to contain a permanent subpopulation of progenitor cells that are enriched in outgrowth potential. Using the COMMA-Dbeta-geo cell line as a model, we sought to study the radioresistance of mammary progenitor cells. Using the putative progenitor cell marker stem cell antigen 1 (Sca1), we were able to isolate a discrete subpopulation of Sca1(+) multipo...

OBJECTIVES To compare standard incision and comma shaped incision and its influence on post operative complications in surgical removal of impacted third molar. METHODS This was a cross-over trial. Twenty subjects with bilateral impacted mandibular third molars were recruited for the study. A standard incision was made on one side of the lower jaw and a comma incision was made on the other si...

We say that a class D of categories is the Bourn localization of a class C of categories, and we write D = Loc(C), if D is the class of all (finitely complete) categories D such that for each object A in D, Pt(D ↓ A) ∈ C, where Pt(D ↓ A) denotes the category of all pointed objects in the comma-category (D ↓ A). As D.Bourn showed, if we take D to be the class of Mal’tsev categories in the sense ...