Before revision: Section of Carpinus betulus wood showing the distinctive dark areas created as a result of tylosis in response to fungal infection Anatomy Observed in section under a microscope, tyloses appear as balloon-like protrusions emanating from axial paratracheal parenchyma cells into xylem vessels through pits linking the two.
After revision: Like most people with tylosis have to get very painful sergerySection of Carpinus betulus wood showing the distinctive dark areas created as a result of tylosis in response to fungal infection Anatomy Observed in section under a microscope, tyloses appear as balloon-like protrusions emanating from axial paratracheal parenchyma cells into xylem vessels through pits linking the two.