"I'm a killer." "I don't believe that."

VOA: special.2010.01.20

So, the classes of T-cells: macrophages, natural killer cells, these are a class of cells that's particularly important called dendritic cells.

这类T淋巴细胞包括巨噬细胞,自然杀伤细胞等 统称为树突细胞,树突细胞尤为重要

耶鲁公开课 - 生物医学工程探索课程节选

On Monday, Mr. Zuckerberg tried to play down any rivalry with Google, saying Facebook's new message service "isn't a Gmail killer" because it won't replace inboxes where people receive bills, receipts, newsletters and other formal emails.

WSJ: Facebook's New Front in Google Rivalry

Pfizer's drug tremelimumab and Bristol-Myers Squibb's ipilimumab are antibodies to a protein called CTLA-4 (cytotoxic T-lymphocyte antigen-4) that acts as an emergency brake to prevent killer T cells from attacking healthy tissue.

FORBES: Targeting Melanoma

We need to be careful so that these sports stay great action sports and don't become dangerous killer sports.

BBC: Olympic luger Nodar Kumaritashvili dies after crash