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the vital principle. The individual is nothing. He is no more than the diatom, the bit of protoplasm. Mrs. E. Lynn Linton.

iations and changes, as shown in the figure (see also Karyokinesis). At the same time the protoplasm of the cell becomes gradually constricted by a furrow transverse to the long axis of the nuclear spindle, followed, on the completion of the division of the nucleus, by a separation of the cell contents into two masses,…

The outer transparent layer of protoplasm in a developing ovum.

The semisolid external layer of protoplasm in some unicellular organisms, as the amoeba; ectoplasm; exoplasm.

Lifeless matter deposited in the form of minute granules within the protoplasm of living cells.

on (Biol.), a method of cell formation, seen in cells having a cell wall. The nucleus and protoplasm divide into two distinct masses; these in turn become divided and subdivided, each division becoming a new cell, until finally the original cell wall is ruptured and the new cells are liberated (see Segmentation, and Il…

The protoplasm in the interior of a cell.

The inner granular layer of protoplasm in a developing ovum.

s, the entoplastic products of some Protozoa, or the entoplastic modification of the cell protoplasm, by which a nucleus is produced.

One of the fine granules contained in the protoplasm of a pollen grain.

A polynuclear mass of protoplasm, not divided into separate cells, from which certain ova are developed. Balfour.

A cell or mass of protoplasm devoid of an envelope, as a white blood corpuscle.

The fluid portion of the cell protoplasm, in opposition to stereoplasm, the solid or insoluble portion. The latter is supposed to be partly nutritive and partly composed of idioplasm.

That portion of the cell protoplasm which is the seat of all active changes, and which carries on the function of hereditary transmission; -- distinguished from the other portion, which is termed nutritive plasma. See Hygroplasm.

as, the intracellular movements seen in the pigment cells, the salivary cells, and in the protoplasm of some vegetable cells.

The indirect division of cells in which, prior to division of the cell protoplasm, complicated changes take place in the nucleus, attended with movement of the nuclear fibrils; -- opposed to karyostenosis. The nucleus becomes enlarged and convoluted, and finally the threads are separated into two groups which ultimatel…

The protoplasmic substance of the nucleus of a cell: nucleoplasm; -- in opposition to kytoplasma, the protoplasm of the cell.

ivision of the nucleus, without any changes in its structure, followed by division of the protoplasm of the karyostenotic mode of nuclear division.

One of certain very minute whitish or colorless granules occurring in the protoplasm of plants and supposed to be the nuclei around which starch granules will form.

he nutritive material brought to them by the blood, or by which they transform their cell protoplasm into simpler substances, which are fitted either for excretion or for some special purpose, as in the manufacture of the digestive ferments. Hence, metabolism may be either constructive (anabolism), or destructive (kata…