Kinesin is a processive motor that takes 8.3-nm center-of-mass steps along microtubules for each adenosine triphosphate hydrolyzed. Whether kinesin moves by a "hand-over-hand" or an "inchworm" model has been controversial. We have labeled a single head of the kinesin dimer with a Cy3 fluorophore and localized the position of the dye to within 2 nm before and after a step. We observed that singl...

Single-unit recording has revealed both hand and eye movement-related activity in the parietal cortex of the macaque monkey. These experiments, as well as neuropsychological studies, are unravelling the complex nature of how the eye and the hand work together in the control of visually guided movements.

ewing's sarcoma (es) is a highly malignant neoplasm of childhood and adolescence seen commonly in both axial and appendicular skeleton but uncommonly in acral region. ewing’s tumor in the hand is extraordinarily rare. radiological features are variable and can mimic other common lesions. we present a case of 13 year old female, with complaints of pain and swelling in right hand, which on x-ray ...