Usually, no one wants things to 'end in tears' — unless they are the experts who have successfully grown miniature human tear glands in the lab that cry like real eyes. Located in the upper part of the eye socket, tear glands secrete tear fluid, which is made of water, proteins, lipids and electrolytes. Scroll down for videoUsually, no one wants things to 'end in tears' — unless they are the experts who have successfully grown miniature human tear glands in the lab that cry like real eyes. Pictured: the lab grown tear glands seen 145 minutes after exposure to noradrenaline, a neurotransmitter that triggers tear secretion, showing the glands swelling with fluid (i.e. However, the researchers explained, having cultivated the miniature tear glands, the real challenge came in actually getting them to cry.

Source: Daily Mail March 16, 2021 18:04 UTC