Nicholas Caliri, 4, watched as nursing student Darrell Bormann (left) performed surgery on his stuffed monkey, 'Oo-ah,' Tuesday morning at the Shriners Hospital for Children in Boston. Students from the Boston Children's School visited the hospital for the 25th year of a program in which hospital staff members showed them how they care for patients.
Nicholas Caliri, 4, watched as nursing student Darrell Bormann (left) performed surgery on his stuffed monkey, "Oo-ah," Tuesday morning at the Shriners Hospital for Children in Boston.

Students from the Boston Children's School visited the hospital for the 25th year of a program in which hospital staff members showed them how they care for patients.
(Globe Staff Photo / Joanne Rathe)