[Technics, main advantages and best indications of quick plastic embedding (author's transl)].

Three recent progresses allow to perform plastic embedding of moderate or large samples of tissue in limits of time close to those of the paraffin embedding and to obtain slices between 1 and 2,5 mu on which all current histochemical or even histo-immunological reactions are possible. These technics prevent the retraction of the tissues, give a good preservation of the structure of the cells and permit a good analysis of the tiny lesions of all kinds of tissues. From our experience about 1362 varied biopsies, the best indications seems to be in order : kidney, hepatic, lung, medullary and nodes biopsies. It seems now justified to introduce these technics as a routine one, inside laboratories which have to detect tiny lesions on particular tissues or on experimental samples.