P4HA3 positivity in AF tissue is heterogeneous.
Expression of P4HA3 was determined immunohistochemically in human AF tissue. Representative images of outer AF (left panel) and inner AF (right panel) from a 45 year old male donor with no signs of disc degeneration. Asterisks: representative examples of immune-positive cellsl circles: immune-negative cells. Black bars represent 50 μm.