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Figure 3: Flow diagram of stepwise validation of immunohistochemical studies in cytology cell blocks. *Number of specimens in panel at discretion of Medical Director. **Ki-67 was scored in decile (see main text)

Figure 3: Flow diagram of stepwise validation of immunohistochemical studies in cytology cell blocks. *Number of specimens in panel at discretion of Medical Director. **Ki-67 was scored in decile (see main text)