This is a fluorescent (FITC)-labeled Antennapedia, Abs/Em = 493/522 nm.
Neuronal cluster loaded with 5 ug/ml FITC-LC-Antennapedia Peptide (AnaSpec cat# 24175, 24176), a fluorescent peptide. Experiment done at room temperature in Earle's Balanced Salt Solution. Images acquired every 30 seconds and total elapsed time on video is 1h (Video courtesy of Dr. Eric Gruenstein, Univ. of Cincinnati, OH).