Distribution of wt and mutant EGFP-fused G-CSF-R in 3T3 cells. 3T3 cells were stably transfected with (A) wt or truncated EGFP-fused G-CSF-R constructs or (B) EGFP-fusion constructs with internal deletions, fixed, and observed using CLSM. Confocal micrographs are representative of the distribution of the various EGFP-fused G-CSF-R constructs in the entire population. Scale bars are 10 μm.