Author: jcohen

“Yevgenievna” and her husband in their apartment. She has been deaf since birth and her husband has limited hearing.  She is considering allowing an experiment by Rebrikov to edit gene’s in her offspring’s embryo that may help avoid hearing loss.  Credit: Sergey Ponomarev

Geneticist Denis Rebrikov in his lab. Credit: Sergey Ponomarev

Microbiome. Coloured scanning electron micrograph (SEM) of bacteria cultured from a fingertip. There are around 1000 species of bacteria from 19 phyla found on human skin. Skin flora is usually non-pathogenic, and either commensal (not harmful to their host) or mutualistic (offer a benefit). One benefit bacteria can offer is preventing transient pathogenic organisms from colonizing the skin surface, either by competing for nutrients, secreting chemicals against them, or stimulating the skin's immune system. However, resident microbes can cause skin diseases and enter the blood system, creating life-threatening diseases, particularly in immunosuppressed people. Magnification: x3000 when printed at 10cm wide.

Klebsiella pneumoniae bacteria. Colored scanning electron micrograph (SEM) of Klebsiella pneumoniae bacteria with a neutrophil, a type of white blood cell involved in defense against bacterial infections. K. pneumoniae is one of several bacteria that can cause pneumonia (lung inflammation). It causes a severe form that can be a complication of chronic lung diseases. K. pneumoniae is also a multidrug-resistant bacterium that can cause severe hospital-acquired infections.