ASCORBIC acid has been found to have a marked inhibitory effect on urease activity. With some preparations of the enzyme, the formation of ammonia from urea is completely inhibited by a concentration ...

This type of medium is both selective and differential. The MSA will select for organisms such as Staphylococcus species which can live in areas of high salt concentration (plate on the left in the ...

Background We present a case of severe neurological symptoms caused by hyperammonemia, secondary to a urinary tract infection with urea-splitting bacteria. Investigations Blood analysis, urinalysis, ...

The purpose of this practical is to investigate the effect of a range of concentrations of salt or sugar solutions on the mass of plant tissue. Make sure that the potato is placed on a ceramic tile ...

In January 1944, a 17-year-old Navy seaman named Nathan Schnurman volunteered to test protective clothing for the Navy. Following orders, he donned a gas mask and special clothes and was escorted into ...