Practical pathology; a manual for students and practitioners . uscular tissue, more especially near the outer surface. Small yellowstreaks run down in the somewhat pale muscular tissue, evidentlymerely continuations of the adipose tissue from the subpericardiallayer. Unless there is also advanced fatty degeneration, the flabbinessdoes not extend beyond the gross lines of fatty tissue. Harden (i^ 63), cut (S 82 et seq.\ stain (§§ 102, 103, or 104, and 135),and mount (§§ 195 or 199). ( X 50).—The epicardial tissue is infiltrated throughout with fat,the connective tissue cells being distended wit
Practical pathology; a manual for students and practitioners . uscular tissue, more especially near the outer surface. Small yellowstreaks run down in the somewhat pale muscular tissue, evidentlymerely continuations of the adipose tissue from the subpericardiallayer. Unless there is also advanced fatty degeneration, the flabbinessdoes not extend beyond the gross lines of fatty tissue. Harden (i^ 63), cut (S 82 et seq.\ stain (§§ 102, 103, or 104, and 135),and mount (§§ 195 or 199). ( X 50).—The epicardial tissue is infiltrated throughout with fat,the connective tissue cells being distended with fat, and looking likethe fat cells of ordinary adipose tissue; the highly refractile globuleshave a double outline, and are stained black with osmic acid or orangewith Sudan in. The nucleus is situated at one angle of the cell, and 3o8 THE HEART is stained blue, pink, or olive green, according to the stain used. Theselarge cells extend in rows for some distance between the musclefibres, but are entirely outside them; the condition is, in fact, one of. Fig. 69.—Section of adipose epicardium. Stained with osmic acid . and carmine. ( x 40.) Superficial epicardium. Deeper layer, enormously thickened, connective tissue cells distended with fat. ; V. Vessels, m. Muscular Fatty infiltration of connective tissue between the musculartissue near the surface of the heart. ifatty infiltration of the connective tissue framework of the heart, and j not of the muscle substance proper. In very marked cases this fatty i infiltration of the connective tissue cells may extend as far as the endocardial surface, when, however, it is almost invariably associated with true fatty degeneration of the muscle fibres. (X 400).—The cells of the adipose tissue are closely packed together, and the following parts may be observed in each. The protoplasm of the cell forms a mere film, except at one point or angle, where there is usually a triangular mass of protoplasm contai
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