A method was devised for estimtaing the electrical resistance between the cytoplasm of adjacent cells of the red marine alga Griffithsia globulifera. A very high resistance was found, which argues strongly against the existence of protoplasmic continuity in this species.

LOEB (9), KUNTZ et al. (6), SCATCHARD et al. (11), and others have made use of osmotic pressure measurements to calculate the molecular weights of pure proteins such as gelatin, crystallized enzymes, and crystallized serum albumen. Protoplasmic proteins have not been investigated. Yet it would be of some interest to know the average molecular weight of a plant's protoplasmic proteins. Such info...

Mathematical models for microbial growth in batch and continuous cultures are formulated. The models have been referred to as distributed models since the microbial population in a culture is looked upon as protoplasmic mass distributed nniformly throughout the culture. Growth is regarded as the increase in this mass by conversion of medium components into biological mass and metabolic products...

and give rise to, cells which are more or less removed from their normal places. Thus polar bodies and ectoderm cells may be caused to form at the vegetative pole or at any other point on the surface of the egg instead of at the animal pole; nevertheless the protoplasmic portions of the yolk-containing cells return to the animal pole when centrifuging ceases unless otherwise prevented. In some ...

The capacity to precipitate quantitatively with homologous antiserum of native protoplasmic polysaccharide from Escherichia coli was not reduced by incubation in human plasma; it was reduced with the immunochemically related lipopolysaccharide.

Background: Formalin is an aqueous solution of formaldehyde. It is a protoplasmic poison and causes coagulation necrosis and tissue fixation. Case: A 19-year-old girl was brought for autopsy to the mortuary of JSS Medical College, Mysore. Conclusion: Formalin is an unusual poison to be ingested for suicidal purposes due to selective availability and its strong taste and odor.

Study of protoplasts, lysed protoplasts, and cells treated with lysozyme in the absence of osmotic stabilizer suggested that the alkaline phosphatase (EC 3.1.3.1.) of Bacillus subtilis is located in the protoplasmic membrane. Cytochemical evidence in support of this view is presented. The enzyme protein was strongly bound to the membrane structure and could not be solubilized by a number of tre...