DUKE UNIVERSITY IMAGE: CIRCULATING ANTIBODY (WHITE) IS PREVENTED FROM ACCESSING OLFACTORY EPITHELIUM BY A PREVIOUSLY UNKNOWN BLOOD-OLFACTORY BARRIER, THE BOB. THIS NEWLY IDENTIFIED BARRIER KEEPS SOME OF THE LARGER MOLECULES OF THE BODY’S IMMUNE SYSTEM OUT OF OLFACTORY EPITHELIUM (GREEN), LEAVING A GAP IN PROTECTION MAY EXPLAIN TWO MYSTERIES OF COVID. CREDIT: ASHLEY MOSEMAN LAB,...
