Fluorescent images of A549 cell for competition studies were observed with fluorescent microscopy.

<p>Cells were incubated for 30-IF7 (A) or TMR-RIF7 (B). Cells were incubated with non-labeled IF7 (C) or RIF7 (D) for 30 min in advance of TMR-labeled peptides. Quantitative cell-binding was measured using a F-7000 FL spectrophotometer. Data are presented as means ±SD (n = 3). **: <i>P</i><0.01. Original magnification: ×20. Bar represents 100 µm.