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what is this
red bone marrow

what is this
red bone marrow

what is this
white blood cells

what is this, what are the circular area
Human palantine tonsil, lymphatic follicles

what is this, what are the circular areas, and what are the darker areas

what is this
mammalian lymph node

what is this, what is the line in the middle
mammalian lymph vessel/lymphatic vessel, valve

what is this
regular cardiac muscle

what is this
regular cardiac muscle

what is this, what happens during it
recent myocardial infarction, neutrophils enter to remove dead tissue

what is this
recent myocardial infarction, neutrophils enter

what is this
atherosclerosis

what is this, what are the brackets
aortic wall after aneurism, dissection

what is this
aortic wall after aneurysm

what is this
old myocardial infarction

label and what is it
Vena cava
Top arrow: tunica media
Middle bracket: tunica media
botttom bracket: tunica externa

what is this and label
Aorta
Top arrow: tunica media
Middle bracket: tunica media
botttom bracket: tunica externa