A new freshwater species of (Bacillariophyta) from Hunan Province, China.

This study describes a new species of , , on the basis of light and scanning electron microscope images. is characterised by its linear valve outline, extremely divergent striae, and very large hexagonal central area occupying ca. 1/5-1/8 of the valve length.

Acupuncture for the Treatment of Itch: Peripheral and Central Mechanisms.

Despite the widespread clinical use of acupuncture in the treatment of pruritus caused by psoriasis, urticaria, uremic, and other diseases, insights into the mechanism of action of acupuncture are still emerging. For the above reasons, a beneficial effect of acupuncture on pruritus was not recommended or reported in recent clinical practice guidelines. Acupuncture is a kind of physical stimulation, which has the characteristics of multi-channel and multi-target effects.