Because at least one kind of invasive shrimp is an even bigger pest when it has a parasite on board .
因为当船上有寄生物时,至少有一种入侵的虾类是一种更大的害虫。
It is likely that the gene transfer was mediated by a parasite or a pathogen .
这个基因转移可能是由寄生生物或病原体介导产生的。
A parasite obtains the benefits of widespread cooperation while at the same time taking advantage of it .
一个寄生物在利用广泛合作的同时,也从中获得好处。
Like a parasite clinging to a host , the deadly hiv virus buds from a white blood cell grown in the laboratory .
像寄生虫依附在它的宿体上一样,在实验室里的致命艾滋病毒在从白细胞上发芽生长。
Called a cellscope , it can show individual white and red blood cells , which means that with the correct stain it can be used to identify the parasite that causes malaria .