Pay attention to the suitability of choosing ppe

Drug identification

【Characteristics】 Dry rhizome slightly curved, nodular, mask scars on the mask, the most under the mask slender roots, length 12 to 32 cm, diameter 1 to 3 mm, the surface yellow-white or yellow-brown, with fine wrinkles. Tough quality, not easily broken, uneven profile, white, yellow-white wood heart. No gas, slightly bitter taste, with stickiness.

[Microscopic identification] This product stem transverse section: epidermal cells 1 column. The cortex is broad, with leaf vascular bundles scattered. There are 10 to more than 20 columns of thick-walled cells under the epidermis and outside of the middle column. During this period, there are 3 to 5 columns of cell walls that are slightly thickened; the endothelial layer is not obvious. The middle perisylvian sheath is a series of thin-walled cell weaving middle columns, and the xylem beam is irregularly banded or branched. The phloem bundles are interlaced and some cells contain yellow-brown substances.

Medical Diagnosis Equipment

Kojic Acid Dipalmitate,Pharmaceutical Chemical,Medical Diagnosis Equipment

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