1. Department of Anatomy and Structural
Biology and Gruss-Lipper Biophotonics Center, Albert Einstein College of Medicine, 1300 Morris Park Avenue,
Bronx, New York 10461, United States
2. Swammerdam Institute for Life
Sciences, Section of Molecular Cytology, van Leeuwenhoek Centre for
Advanced Microscopy, University of Amsterdam, Science Park 904, NL-1098 XH, Amsterdam, The Netherlands