The paper compares the three withdrawing channels for venture capital investment, analyzes their advantages and shortcomings respectively, and proposes recommendations to support the development of venture capital investment in China by drawing international experiences in the field.

Possible transmission routes of Bursaphelenchus xylophilus in China based on molecular data;

Preliminary study on the transmission route of Spercara chuatsi virus;

Its transmission route, current prevention and treatment situation are analyzed, and the related problems are discussed and corresponding suggestions are offered in this essay.

An analysis on the spread way of hepatitis C virus in different populations;