A single cell within a culture of freshly isolated cardiac muscle cells is injected with a fluorescent dye that cannot cross cell membranes. Within minutes, several adjacent cells become fluorescent. The most likely explanation for this observation is the presence of
Gap junctions are pores composed of paired connexons that allow the passage of ions, nucleotides, and other small molecules between cells. Ref: katzung 12 th ed.
All India exam
Gap junctions
IP3 receptors
Transverse tubules
Desmosomes
Gap junctions