Aerotaxis is the movement of an organism in response to environmental oxygen concentrations, either towards or away from a given oxygen concentration. Many bacteria are microaerophilic meaning they prefer environments with low oxygen content. Higher or lower O2 content than the optimum are considered a repellant and bacteria will navigate towards the optimum. This animation is an overview of studying aerotaxis in motile bacteria.

Glycolysis is a determined sequence of ten reactions involving ten intermediate compounds (one of the steps involves two intermediates). The intermediates provide entry points to glycolysis. This animation features the 3D protein structures of all ten enzymes as well as the enzyme substrate and products.

Dr. Gregory Ruhnke, an Assistant Professor in the Section of Hospital Medicine at the University of Chicago, in an article coauthored with Dr. David Doukas appearing in the May 2013 issue of Mayo Clinic Proceedings, examines the context and professional implications of residents preparing for board examinations using questions reproduced by previous residents. Available at: http://tinyurl.com/c5dhms6

Context: Latinos are the largest and fastest-growing ethnically diverse group in the U.S.; they are also the most overweight. Mexico is now second to the U.S. in experiencing the worst epidemic of obesity in the world. Objectives of this study were to (1) conduct a systematic review of obesity- relatedinterventionstargetingLatinoslivingintheU.S.andLatinAmericaand(2)developevidence- based recommendations to inform culturally relevant strategies targeting obesity. Evidence acquisition:...

Dr. Adil E. Bharucha discusses his manuscript "Phenotypic Identification and Classification of Functional Defecatory Disorders Using High-Resolution Anorectal Manometry." To view the print version of this abstract go to http://bit.ly/Zp7Aq2.

Drs. Michael McGuckin and Sumaira Z. Hasnain discuss their manuscript "IL-10 Promotes Production of Intestinal Mucus by Suppressing Protein Misfolding and Endoplasmic Reticulum Stress in Goblet Cells." To view the print version of this abstract go to http://bit.ly/Y6pUiX.