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FIGURE 1. (A) Adenocarcinoma with diffuse pattern stained by mAb to CD31. Normal structure was destroyed, and vessels were randomly and diffusely distributed throughout tumor. (B) Adenocarcinoma with alveolar pattern stained by mAb to CD31. Vessels (arrows) in alveolar pattern area were in original distribution; tumor cells filled up alveoli instead of destroying them. (C) Normal alveoli. (D) Consecutive section of same tumor as in B stained by mAb to CD105. Trapped vessels showed negative staining (arrows).
