. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. PRODUCTS, ADVENTITIOUS. (&.) Fibrin retained. — The majority of pro- tein-precipitates are probably fibrinous. At least spontaneous coagulation (a quality be- longing to them alone) is by far the most readily conceivable cause of precipitation under the circumstances now pointed at. Fibrin occasionally occurs as a potential precipitate in the fluid of dropsies, a fact which will be further considered in Part II. (C.) Casein occurs in combination with fat in so-called "milky" urine. (D.) Globulin is practica
. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. PRODUCTS, ADVENTITIOUS. (&.) Fibrin retained. — The majority of pro- tein-precipitates are probably fibrinous. At least spontaneous coagulation (a quality be- longing to them alone) is by far the most readily conceivable cause of precipitation under the circumstances now pointed at. Fibrin occasionally occurs as a potential precipitate in the fluid of dropsies, a fact which will be further considered in Part II. (C.) Casein occurs in combination with fat in so-called "milky" urine. (D.) Globulin is practically unknown (as distinguishable from the other protein-com- pounds) in the present point of view : it pro- bably forms the substance of some granular precipitates. § II. FAT.— Considered in respect of their ultimate physical elements, the varieties of fat (known to occur as morbid products) appear as adipose cells, free-fluid oil-globules (olein)j solid fat granules (mainly margarin) ; groups of stellate crystals (margarin and margaric acid) ; rhomboidal plates (cholesterin). Fat may likewise be incorporated in such manner with the textures as to be only chemically discoverable,—a fact often lost sight of in the examination of morbid appearances : phos- phuretted fat has thus (among other examples of the fact) been found in cancer. Of serolin as a new product nothing is known. Unhealthy formation of fatty and oily sub- stance is of almost perpetual occurrence. The fat produced is either similar (when viewed with the naked eye) to that naturally filling the cells of adipose tissue, or more or less com- pletely dissimilar. In the first case the na- tural adipose structure is simply present in excess, whence arise local or general obesity^ fatty infiltration of parts, and lipomatous tu- mours. In these conditions there is little more than hypertrophy or excessive secretion; and it is mainly in deference to usage that we shall, in another part of this article, describe lipo
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