CellandDevelopmentalBiologySection;
DivisionofBiologicalSciences;
UniversityofCalifornia;
SanDiego;
LaJolla;
CA920930116;
USA;
DepartmentofBiology;
UniversityofMaryland;
CollegePark;
MD20742;
USA;
DepartmentofBiology;
DukeUniversity;
Durham;
NC27708;
USA;
TechnicalUniversity;
Arcisstr.21;
80290Munich;
Weihenstephan;
Germany;