Long used as medicine to have a long history in China. In recent years, pharmacological research and clinical application of more extensive, and have achieved encouraging results and progress.

1 Source

Earthworm (also known as worms) to participate in huge earthworm species have Pheretima Pheretima aspergilium (E. Perrier), Pheretima popular Pheretima vulgaris Chen, William Pheretima Pheretima guillelmi (Michaelsen), or blind comb Pheretima Pheretima pectinifera Michalsen dry body. The former are called "Dragon of Canton," after the three Xi said, "Shanghai to Long." pheretima caught from spring to autumn, Shanghai Dragon of the summer capture, timely cut open the abdomen, remove the internal organs and sediment washing net, dried or low temperature in dry place.

2 character identification

Pheretima: elongated article sheets, bent, edge a little volume, length 15 ~ 20 cm, width of 1 ~ 2 cm, all with links back to the purple gray brown, abdomen pale yellow brown, in addition to front and rear ends, the abdomen is cut open, internal organs have been removed or occasionally residual. mouth and anus is visible. germ band was known as "white neck", the male gonopore is also visible, often ranging from broken for the length of the segment. quality of hard and brittle, gas fishy, taste salty to be big, fat-like, not broken, no soil is preferred.

http://eng.hi138.com/?i305685_Progress-in-medicine-and-earthworm