. Light energy, its physics, physiological action and therapeutic applications . /*. Fig. 29. CONCENTRATED ELECTRIC ARC LIGHT ENERGY. 537 normal tissue. Papillae exist only at rare points; in generala union of the dermis and epidermis is upon a line parallelto the cutaneous surface. There is observed in the derma : (i) A universal scleroustransformation formed of connective tissue bundles slightlycrowded; (2) vessels very much dilated and numerous,fewer where the sclerosis is more advanced and with verythin walls; (3) some few cellular nodules disposed in con-tact with the vessels and which ar
. Light energy, its physics, physiological action and therapeutic applications . /*. Fig. 29. CONCENTRATED ELECTRIC ARC LIGHT ENERGY. 537 normal tissue. Papillae exist only at rare points; in generala union of the dermis and epidermis is upon a line parallelto the cutaneous surface. There is observed in the derma : (i) A universal scleroustransformation formed of connective tissue bundles slightlycrowded; (2) vessels very much dilated and numerous,fewer where the sclerosis is more advanced and with verythin walls; (3) some few cellular nodules disposed in con-tact with the vessels and which are formed only in a lateralpart of the preparation, while all the rest are formed of analmost homogeneous sclerous tissue. Under the higher power a slight hyperkeratosis withoutparakeratosis is noted in the corneous layer. The granularlayer is remarkable for its thickness. Upon the points of theprojections there are found some small epidermic projec-tions formed by collections of large cells covered with a thincorneous layer. There are found between the Malpighian cells a numberof
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