A new method to kill pathogenic bacteria Engineering researchers in Rensselaer Polytechnic Institute are suffering from a new method to eliminate deadly pathogenic bacteria, including listeria, in food packaging and handling pharmacy journal . This innovation represents an alternative solution to the use of antibiotics or chemical substance decontamination in food source systems. Using nature as their inspiration, the researchers successfully attached cell lytic enzymes to food-secure silica nanoparticles, and created a coating with the demonstrated capability to selectively kill listeria-a dangerous foodborne bacteria that triggers an estimated 500 deaths every year in the usa. The coating kills listeria on get in touch with, even at high concentrations, within a few minutes without affecting other bacteria.
A mole of recent onset This is another full case to help you hone your skills in dermoscopy. Case history A 62-year-old guy developed over his still left lower stomach a darkly pigmented symmetrical and oval mole that measured 5 x 3 mm . The mole was absent in baseline photographs taken two years prior to the discussion. Dermoscopy uncovered a symmetrical lesion that had a well toned pigment network with a uniform design. Excision biopsy demonstrated an epidermis with a well produced pigmented rete ridge system connected with increased single melanocytes and nests of melanocytes that were not confluent. The upper dermis showed scattered lymphocytes and some melanin pigment .