Some describe a marked increase in the polynuclear cells, which, probably, is to be regarded as the reaction to secondary infections.
Polynuclear cells appear in great numbers, abscesses and ulcers are formed, which with proper staining can be shown to harbor the various types of mouth bacteria, cocci, spirillae, etc.
This part is, according to the accounts of the majority of investigators, formed of a polynuclear mass of protoplasm not divided into distinct cells.
The contents of the urn, which completely fill up its cavity, are four polynuclear cells arranged in the form of a cross which appear with low powers as granular bodies (fig.
The protoplasm of the yolk cells which line this cavity unites into a continuous polynuclear layer containing at intervals masses of yolk.
The change of the primitive ova into permanent ova takes place in the same manner in Mammals as in Elasmobranchii, except that the fusion of the primitive ova into polynuclear masses is much rarer.
B, gr) which eventually becomepolynuclear and constitute the four granular cells in the urn.
Frequently there appear to be several separate nuclei, hence the widely used name, "polynuclear {181} leukocyte.
Such appearances may readily give rise to the view that in this case the reverse nuclear metamorphosis has occurred; that is a progressive development from mononuclear eosinophil to polynuclear cells.
Farbenanalytische untersuchungen) Ehrlich found the polynuclear cells of the blood and bone-marrow and their early forms free from all neutrophil granulation.
It shews transitions in the blood, from large mononuclear to transitional and polynuclear forms, but is marked by the lack of any kind of granulation.
For, as has been seen in the ordinary polynuclear leucocytes, the immigrated polynuclear eosinophils may similarly change to mononuclear cells; they may perhaps settle down, and approximate to the character of fixed connective tissue cells.
In considering the production of polynuclear eosinophilia we may best start from an experiment of E.
In leukæmia, besides the myelocytes, the polynuclear leucocytes are also enormously increased, and their active emigration is beyond doubt.
Just as little as a polynuclear increase is abnormal, is an increase of the lymphocytes remarkable; and in this case the lymphocytic increase was recognisable after the end of the fifth year.
These cases of infectious leukopenia are to be explained, not by a destruction of white corpuscles, but rather by a diminished inflow, brought about by the circulation of substances negatively chemiotactic for the polynuclear elements.
Thus the peculiarities of guinea-pig's blood, in which two kinds of polynuclearcells are recognisable, throw light upon the corresponding conditions in human blood.
According to Ehrlich, the following may be taken as the standard proportion of the various forms of leucocytes in normal blood: polynuclear neutrophile leucocytes, 70 to 72 per cent.
In this digestion leucocytosis the increase is chiefly in the polynuclear neutrophile leucocytes.
A polynuclear cell concerned in the absorption of bone.
The bodies of all the ova of the nest fuse together, and a polynuclear mass is formed, which increases in size concomitantly with the division of its nuclei.
In a certain number of instances the protoplasm of the cells which are becoming permanent ova appears, however, actually to fuse, and polynuclear masses identical with those in Elasmobranchii are thus formed (cf.
The cells with modified nuclei, which are becoming permanent ova, usually present one point of contrast to the homologous cells in Elasmobranchii, in that they are quite distinct from each other, and not fused into a polynuclear mass.
Beneden has described the polynuclear masses in Mammalia, though he does not appear to me to have given a complete account of their history.
In many instances they form polynuclear masses, not divided into separate cells, generally, however, the individual ova are distinct.
That the polynuclear masses really arise from a fusion of primitively distinct cells is clear from the description of the previous stages.
While the above changes, more especially those in the nucleus, have been taking place, the protoplasm of two or more ova may fuse together, and polynuclear masses be so formed.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "polynuclear" in a variety of sentences. We hope that you will now be able to make sentences using this word.
