前两天欣然收到Scientific Data编辑的邮件，大约两个月前投出的一篇data descriptor几乎不需要什么改动便可以接收了。一直认为Sci Data也是Natur集团又一灌水杂志（紧随Sci Rep之后），预期影响因子也就1点几，结果一查吓了一跳，2016IF高达4.836，都超过了Sci Rep的4.259。。

寄生虫(Parasite)历史悠久含义广泛。英文来源于希腊"parasitos"最早出现在16世纪左右，含义上任何一种其生存依赖于其他生物（宿主）并通常对宿主有害的生物都可以称之为寄生虫，通常包括原生动物(Protozoa)，蠕虫(Helminth/worm parasite)，和外寄生物(Ectoparasite; 一般为节肢动物Arthropod)。

Gut microbiota (gut flora) has aroused numerous research interests due to their potential influnences on human health and development.

通过一项9年的研究，科学家发现:

• 寄生虫能通过改变人体免疫系统影响受孕；

Hymenolepis nana (also known as dwarf tapeworm). The man resented with fatigue, fever, cough, and weight loss of several months’ duration.

研究人员将一种特殊的细菌(双歧杆菌)导入到黑色素瘤小鼠的消化道中，发现小鼠免疫系统攻击肿瘤细胞的能力得到了显著提高。其效果与采用抗PD-L1抗体一类的检查点抑制剂进行治疗相差无几。提高的免疫反应在喂食细菌两周后出现并一直持续到六周后。

I have always been wondering why so many European people have allergies. And the bad thing is that I also got kind of allergy in 2014, and since then every year from March to June.

The figures below illustrates perfectly a few examples of host-control by the parasites. To read the full stories, please go to the original webpage in The Scientist.