Electron Microscopic Observations of Amoeba Proteus in Growth and Inanition

The Cell in Starvation: Physiological and Chemical Observations

Observations made on Amoeba proteus during total inanition revealed the following changes: Dry weight declined progressively, but at a decreasing rate to about 45 per cent of the initial levels when determined in surviving members of a dying population. Protein fell to about 70 per cent of the initial level. A hexane-alcohol extractable component fell during early starvation then rose to about ...

The Cell in Starvation: Physiological and Chemical Observations* by Adolph

In their extensive study "The Biology of Human Starvation," Keys, Bro~ek. Henschel, Mickelsen, and Taylor raise the question (1) as to how the proportional composition of single cells may be altered in inanition, and note the paucity of data on this question. Data obtained on starving metazoans, while abundant, consist of mean changes in parenchymal and stromal cells and is further complicated ...

CYTOPLASMIC FILAMENTS OF AMOEBA PROTEUS I. The Role of Filaments in Consistency Changes and Movement

The role of filaments in consistency changes and movement in a motile cytoplasmic extract of Amoeba proteus was investigated by correlating light and electron microscopic observations with viscosity measurements. The extract is prepared by the method of Thompson and Wolpert (1963) . At 0 °C, this extract is nonmotile and similar in structure to ameba cytoplasm, consisting of groundplasm, vesicl...

Cytoplasmic Filaments of Amoeba Proteus

The role of filaments in consistency changes and movement in a motile cytoplasmic extract of Amoeba proteus was investigated by correlating light and electron microscopic observations with viscosity measurements. The extract is prepared by the method of Thompson and Wolpert (1963). At 0 degrees C, this extract is nonmotile and similar in structure to ameba cytoplasm, consisting of groundplasm, ...

Some Observations on the Behaviour of Amoeba proteus