The special problems of preparing suspensions of cell fractions such as mitochondria for electron microscopy are largely eliminated once the fixed organclles are gathered into a cohesive pellet. Thesc pellets may then be handled in the manner conventional for blocks of tissue (1, 2). The use of very small samples (e.g., the mitochondrial yield from 4 mg of rat liver) has been made possible by t...

Protein synthesis is one of the most complex cellular processes, involving numerous translation components that interact in multiple sequential steps. The most complex stage in protein synthesis is the initiation process. The basal set of factors required for translation initiation has been determined, and biochemical, genetic, and structural studies are now beginning to reveal details of their...

Polystyrene mounting medium obtainable Ltd, 20 Du The medium described by Kirkpatrick One pounc and Lendrum (1939) and named by them mountant DPX (Distrene plasticised in xylene) was (75°% one replaced by a better formula in 1941. This medium BPS (butyl phthalate plasticised styrene) has given excellent and economical service until recently. The current trouble was not due to the makers of the ...

Recently researchers have developed soft actuators capable of morphing into complex shapes taking inspiration from nature. In this paper, we a splay-nematic liquid crystal polymer network tapered actuator that can morph flat film to cone, mimicking the blooming single petal Calla Lily flower. We demonstrated formation conical tubes through finite element simulations and experiments. The influen...