a couple of guys in lab coats prepare to use a massive microscope
a man is showing off an electron microscope
a man is talking
a scientist is talking about a microscope
guys in lab jackets
men are in a lab discussing a microscope
men showing some mechanical experiments
scientists use a microscope
the scientest talks about the microscope
the two men are filming in a lab
two men are by a microscope
two men are getting ready to examine something under a giant microscope
two men are talking about a device
two men having a conversation about science
two men look in a microscope
two men with safety goggles
two people working in lab here
two persons are talking in the lab
two scientists are spaeking with each other
a couple of guys in lab coats prepare to use a massive microscope