cardiac

muscle

tissue

section

brightfield

microscopy

fibers

nuclei

cell

structure

cellular

organization

stained

histology

biology

technique

science

education

research

heart

morphology

anatomy

medical

biological

health

pathology

experiment

laboratory

visualization

microscope

magnification

video

microscopic

view

detailed

high

cells

myocytes

intercalated

discs

striated

arrangement

slide

sample

examination