▪ Abstract The bacterial flagellum is both a motor organelle and a protein export/assembly
apparatus. It extends from the cytoplasm to the cell exterior. All the protein subunits of the …

Flagella and motility represent two of the richest subjects in microbiology, involving not only
bacterial genetics, molecular biology, and physiology but also bioenergetics, hydrodynamics…

Many bacterial species move using organelles called flagella. Together with the sensory
apparatus that controls its operation, the flagellum represents a complex subsystem within the …

Bacterial flagella are semi-rigid helices that undergo true rotation. In peritrichously flagellated
bacteria (eg, Escherichia and Salmonella) there are many flagella on each cell; during …

A “temporal gradient apparatus” has been developed that allows the motility of bacteria to be
studied after they have been subjected to a sudden change from one uniform concentration …

In 842 patients, with the clinical diagnosis of root compression due to a disc herniation,
laminectomy failed to reveal any lesion of the intervertebral disc in sixty-eight patients. In nine, …

1. The avascular zone in the tendon of the supraspinatus near its insertion was not seen in
the other tendons comprising the rotator cuff, except for the superior portion of the insertion of …

Tumbling, a characteristic feature of the motility and chemotactic response of peritrichously
flagellated bacteria, has been examined by dark-field light microscopy and found to be …

Bacterial flagella, unlike eukaryotic flagella, are largely external to the cell and therefore many
of their subunits have to be exported. Export is ATP-driven. In Salmonella, the bacterium …

The human hepatoma cell line, PLC/PRF/5, was shown to produce hepatitis B surface antigen
(HBsAg). Immunologically reactive material was present in the supernatant tissue culture …