Calcium transients and their parameters in RVCM and LVCM. (A) Representative traces of [Ca²⁺]_i changes evoked by field stimulation in LVCM (black) and RVCM (gray). Summary of the results from LVCM (n = 76, n = 14) and RVCM (n = 98, n = 14). (B–D) Diastolic [Ca²⁺]_i just before the pulse (B), the peak level (C), and their difference (Δ[Ca²⁺]_i; D) showed no difference between RVCM and LVCM. (E–G) Time to decay₁₀, decay₅₀, and decay₉₀, representing the time from peak to 10, 50, and 90% decay of Ca²⁺ transient, respectively. Note the longer times to decay₅₀ and decay₉₀ in RVCM than LVCM. All statistical tests performed using nested t test. ***, P < 0.001; ****, P < 0.0001. The gray dot means the measured value of individual cells, and the block dot represents the average of the measured value for each animal. The black line in the column means average of measured value.