Quantitative study of ageing changes in the human sinoatrial node and internodal tracts.
D000273:Adipose Tissue / Q000033:anatomy & histology; D000328:Adult; D000368:Aged; D000375:Aging; D003094:Collagen; D006321:Heart / Q000033:anatomy & histology / Q000503:physiopathology; D006329:Heart Conduction System / Q000033:anatomy & histology*; D006801:Humans; D008875:Middle Aged; D012849:Sinoatrial Node / Q000033:anatomy & histology*
D003094:Collagen