Figure 2).

Original photographs of myosin light chains (MHC) in the myocardium of normal heart (NH) and in patients with aortic stenosis (AS) or hypertropic obstructive cardiomyopathy (HOCM). All fibres contained VLC-1, VLC-2 and VLC-2*, but patients with hypertrophied myocardium contained ALC-1 additionally. ALC-1 Atrial essential light chain; TM Tropomyosin; VLC-1 Ventricular essential light chain; VLC-2 and VLC-2* Isoforms of the ventricular regulatory light chain. No phosphorylation of the regulatory light chains was detectable