The Development of a Microbial Challenge Test with Acholeplasma laidlawii To Rate Mycoplasma-Retentive Filters by Filter Manufacturers.

Unlabelled: Mycoplasma are bacteria that can penetrate 0.2 and 0.22 μm rated sterilizing-grade filters and even some 0.

The Importance of Accurate Microorganism Identification in Microbial Challenge Tests of Membrane Filters. Part II. The Comparison of Hydrogenophaga pseudoflava ATTC 33668 and Curvibacter sp. ATCC 700892 by Microbial Challenge Tests with Membrane Filters.

Unlabelled: The ASTM 838-05 standard describes a bacteria challenge test procedure based on Brevundimonas diminuta (ATCC 19146) to verify a 0.2 μm rated sterilizing-grade filter. For process validation procedures a correct identification of the challenge organism is essential.

The importance of accurate microorganism identification in microbial challenge tests of membrane filters--part I.

Unlabelled: Microbial challenge testing is a common procedure to determine the retention efficiency, performance, and validity of a sterilizing-grade filter. The ASTM 838-05 standard describes a bacteria challenge test procedure based on Brevundimonas diminuta (ATCC 19146), routinely used to verify a 0.2 μm rated sterilizing-grade filter.

Effect of arginine depletion on glomerular and tubular kidney function: studies in isolated perfused rat kidneys.

The effect of L-Arg depletion on glomerular hemodynamics and tubular function of isolated rat kidneys perfused with a medium containing 21 amino acids has been studied. A cyclooxygenase inhibitor was added throughout for blockade of prostaglandin synthesis. Arg depletion caused significant (approximately 30%) reductions in renal perfusion flow rate (PFR, 13.

Subdiaphragmatic extralobar pulmonary sequestration.

A 21-day-old girl presented with a left subdiaphragmatic retroperitoneal mass discovered on maternal ultrasound at 23 weeks' gestation. The clinical impression was neuroblastoma, and preoperative workup showed no for metastatic disease. Histologically, the lesion proved to be an extralobar pulmonary sequestration.