Tiny human intestine grown inside mouse

Gut tissue in rodents could test patient-specific disease treatments

iny specks of human intestinal tissue (stained pink)

LOOKS LIKE A GUT  Transplanted into mice, tiny specks of human intestinal tissue (stained pink) develop into working organs surrounded by a muscular sheath (stained green), just like real intestines.

Helmrath lab

Slimy chunks of human gut can now grow up and get to work inside of mice.