Mycobacterium abscessus Pneumonia in an Immunonormal Infant.

A 2-month-old male with failure to thrive and respiratory symptoms was found to have bilateral pneumonia secondary to Mycobacterium abscessus . M. abscessus pulmonary infections have mainly been noted in immunocompromised children; prior reports presented similarly, though our patient is unique given the young age of presentation and lack of diagnosed immunodeficiency or underlying disease.

Cytomegalovirus Associated Duodenal Ulcer and Duodenitis in a Malnourished Pediatric Patient.

Cytomegalovirus (CMV) duodenitis is a rare occurrence, especially in pediatric patients. A thirteen-month-old female presented to the Emergency Department for a febrile seizure. She was incidentally admitted for severe malnutrition with an initial workup remarkable for only a slight elevation in her ALT at 48.

Thermal Esophageal Injury following Ingestion of Boiling Mushroom Water.

Thermal esophageal and gastric damage from ingestion of hot liquids is poorly studied in pediatrics. Limited case reports exist in the literature. Many cases presented with chest pain, dysphagia, and odynophagia.

Expression of Mycobacterium tuberculosis Ku and Ligase D in Escherichia coli results in RecA and RecB-independent DNA end-joining at regions of microhomology.

Unlike Escherichia coli, Mycobacterium tuberculosis (Mt) expresses a Ku-like protein and an ATP-dependent DNA ligase that can perform non-homologous end-joining (NHEJ). We have expressed the Mt-Ku and Mt-Ligase D in E. coli using an arabinose-inducible promoter and expression vectors that integrate into specific sites in the E.