Taylor first described exosomes in the 1980s, originally believing them to be cell fragments.[5] He later wrote in a now retracted paper that exosomes could potentially be used as biomarkers for profiling in ovarian cancer biopsies, and could extend their utility to screening other asymptomatic areas.[6] What constitutes exosomes has not been defined; specifically, markers of exosomes do not exist.[7]
In 2015, the Journal of Immunology retracted a paper it published in 2006 and which Taylor had co-written[8] after an "institutional research misconduct investigation committee determined that multiple figures in the...paper were falsified".[9][10] Taylor responded to the retraction on the blog Retraction Watch, disputing various aspects of the retraction, and stating that he sent "copies of the original data so that the [journal's] editor could independently verify that no falsification or fabrication occurred".[10]