What Is Wrong with This Picture?

[摘要] As part of an institutional review board–approved study of blood collection tubes, paired blood samples from renal dialysis patients were collected into plastic tubes (BD Vacutainer) with and without thrombin-based clot activator. All tubes contained barrier gel. Fig. 1 shows thrombin-containing tubes with blood from 2 study patients.Fig. 1. Blood samples from 2 patients after centrifugation at 1700 g . Both tubes contained a thrombin-based clot activator.1. What is unusual in the image?2. What is a …

[学科分类] 过敏症与临床免疫学