Saliva and nasopharyngeal samples have similar sensitivity for detecting SARS-CoV-2.

Bastos ML, Perlman-Arrow S, Menzies D, Campbell JR. Ann Intern Med. 2021;174:501-10.

Specific material effects of wear-particle-induced inflammation and osteolysis at the bone-implant interface: A rat model.

Introduction: Wear particles produced from prosthetic joints may play critical roles in periprosthetic inflammatory reactions and osteolysis. The objective of this study was to quantify and compare the response to wear debris from different biomaterials at the bone-implant interface in a rat knee model.

Methods: Sixty rats were divided into titanium alloy (Ti-6Al-4V), cobalt chromium (Co-Cr), ceramic (AlO), ultrahigh molecular weight polyethylene (UHMWPE), and control (phosphate buffered saline) groups with 12 animals per group.