Fig. 10.

(case 3). Histochemistry. A (top). Diastase-resistant. strongly PAS-positive substance is seen over the epidermis and in the crust. Original magnification: x20. B (left bottom). Magnified Fig. 10A. Wing-like part of the external cement which is diastase-resistant, strongly PAS-positive, spreads widely over the epidermis and becomes less thick toward the distal end, like a gentle slope below a mountain. Original magnification: x100. C (right bottom). Diastase-resistant, strongly PAS-positive substance (asterisks) in the crust and around the epidermal cells. This substance is regarded as the permeable toxic agents in the tick saliva. Original magnification: x200.