Full characterization of primary human skeletal muscle cells derived from malignant hyperthermia‐negative (MHN; negative patients) and malignant hyperthermia‐susceptible (MHS; susceptible patients) biopsies. (a, b) Haematoxylin and eosin staining of muscle fibres derived from MHN and MHS subjects shows no significant difference between the two groups. Left panel, 10× magnification; right panel, 40× magnification. The pictures are representative of n = 6 for each group. (c–e) Immunohistochemical staining of primary human skeletal muscle cells reveals a strong positivity to actin‐specific muscle, desmin, and myogenin, respectively (25× magnification). The photographs are representative of n = 6 for each group