Figure 1 The expression of CD40, CD40L as well as ICOS,
ICOSL in nasal tissues of ECRS and Non-eCRS patients
(A). The representative IHC stainings of CD40, CD40L, ICOS, and ICOSL.
Original magnification x400. (B). The mean numbers of
CD40+, CD40L+,
ICOS+ , and ICOSL+ cells in nasal
tissues.