Fig. 4

a Representative brightfield and fluorescent micrographs of Concanavalin A stained (i and ii) normal C. pyrenoidosa, (iii and iv) C. pyrenoidosa cells incubated with A. fumigatus spent medium and (v and vi) C. pyrenoidosa cells incubated with GlcNAc. White arrows indicate the presence of GlcNAc on the C. pyrenoidosa cell surface giving bright red spots. b FTIR spectra of normal C. pyrenoidosa, A. fumigatus spent media-incubated C. pyrenoidosa, GlcNAc-incubated C. pyrenoidosa and GlcNAc powder alone. Arrows indicate the characteristic peaks of GlcNAc in spent medium-incubated as well as GlcNAc-incubated C. pyrenoidosa biomass