"A honeybee’s venom sac empties into a pumping chamber, which contains little pumping elements called valves. This was illustrated as early as 1910 but we’ve never known exactly how these valves work. In our study published today, we filmed the pumping elements inside the bee stinger in action for the first time. " https://theconversation.com/how-does-a-honeybee-stinger-actually-pump-venom-first-ever-video-shows-it-in-action-292789 #Biology #Bees