Mechanical rotary device for plating out bacteria on solid medium.

Primary plating medium for differentiating the colonies of the genus Proteus from certain other enteric bacteria.

A modified device for replica plating.

409 repeated centrifugation and/or a series of sieving steps N0rgaard described a technique utilizing density gradient centrifugation. Although high purity and ultrastructural preservation were seen, the procedure required renal perfusion with a special medium, and yields of pure glomeruli were relatively low (10 to 20%). The current procedure is simple and rapid and requires neither renal perf...

Mechanical damage to Gram-negative bacteria by surface plating with the Drigalski-spatula technique.

Colony counting by spreading bacterial suspensions on plating media by various techniques is of general concern. Comparative studies between hand plating (Drigalski-spatula technique) for different time intervals and spiral plating resulted in significant differences in colony counts. Lower counts of Gram-negative bacteria were obtained by using hand plating for more than 10s, compared with sho...

Plating medium for differentiation Salmonella arizonae from other salmonellae.

A differential plating medium developed for isolation of Salmonella arizonae produces a uniform reaction for both lactose-negative and -positive S. arizonae and differentiates S. arizonae from other salmonellae.

Evaluation of "floc" as a Replica Plating Material for Bacteria.

and spread during the summer to widely separated locations. In addition to white perch (Roccus americanus), striped bass (R. saxatilis) were involved to a lesser degree. Carefully selected moribund specimens were collected and delivered to the laboratory. Microscopy disclosed an abundance of polarly staining gram-negative rods in blood and organs of diseased fish. First isolations of these bact...