Fig. 2
The expression pattern of NlGrs in different developmental stage. NlGrs expression at various stages including 1st-instar nymph (1st), 2nd-instar nymph (2nd), 3rd-instar nymph (3rd), 4th-instar nymph (4th), 5th-instar nymph (5th), and 1-day- to 5-day-old female adults (1d-5d); mRNA levels of 1st-instar nymphs were used as controls. Different color fonts represent different predicted subfamilies: red: CO2 receptor subfamily; green: Gr43a-like receptor subfamily; blue: sugar receptor subfamily; orange: bitter receptor subfamily; black: unknown functions receptor. All mRNA levels are normalized by the β-actin mRNA levels, and data are shown as the mean (n = 3)