Clockwise from left : Lihua Zhao with a 3D-printed sample , a surgical guide tool , a nasopharyngeal swab container , and a 3D-printed mat . Opposite : Zhao ’ s daughters , Jocelyn and Katheryn , have inherited her passion for science .
“ I turn around and ask them , ‘ Okay , what problem do you have ? We can solve it together .’”
PHOTOGRAPHS BY CAYCE CLIFFORD