The new model mimics the structure and function of the human conjunctiva in a lab dish, even producing its own tears. When you purchase through links on our site, we may earn an affiliate commission.

Tears seem simple, but the tiny glands that produce them are among the least understood organs in the human body. By growing miniature human tear glands in the lab and coaxing them to “cry,” ...

A close-up photograph of what appears to be a light-brown human eyeball shows the organ's expansive, cavernous depths surrounding a seemingly bottomless, black pit that, together, mimics the intricate ...