Present (unspecified strength)
    Present (strong)
    Present (moderate)
    Present (weak)
    Uncertain
    Not Detected
    Homogeneous
    Graded
    Regional
    Spotted
    Ubiquitous
    Restricted
    Single cell
    High
    Medium
    Low
    Increase, large
    Increase, small
    Decrease, large
    Decrease, small
    Contains note