Figure 4.

(a) Positive immunoreactivity for vimentin. (b) Positive immunoreactivity for CD31. (c) Positive immunoreactivity for CD34. (d) Positive immunoreactivity for KI-67

(a) Positive immunoreactivity for vimentin. (b) Positive immunoreactivity for CD31. (c) Positive immunoreactivity for CD34. (d) Positive immunoreactivity for KI-67