Myocyte

Graphic by Janet Sinn-Hanlon, Design Group@VetMed Tiny walking “bio-bots” are powered by muscle cells and controlled by an electric field.
Muscle-powered bio-bots walk on command
Transforming Scar Tissue Into Beating Hearts: The Next Instalment
Scientists Use Silk from the Tasar Silkworm as a Scaffold for Heart Tissue