There are several types of line annotations commonly used in histology:
Simple Lines: Used to demarcate boundaries or highlight linear structures. Arrows: Indicate specific points of interest, such as a particular cell or abnormality. Polygons: Enclose areas to highlight regions of interest, such as a tumor or a specific tissue section. Curved Lines: Follow the natural contours of tissues or structures. Text Labels: Provide descriptions or names for the annotated structures.
