Graph showing Tumor weight versus days since implant for the EKVX tumor in SCID mice. There were three groups in the study. Group 1: 1X10^7 implanted SC bilaterally- Passage 1. 100% Take Rate Group 2: fragments implanted bilaterally- Passage 4. 100% Take Rate Group 3: fragments implanted bilaterally- Passage 10. 90% Take Rate Notes: Eight to Ten animals were assigned to each group. Animals were bilaterally implanted for subsequent tumor collection and microarray studies. To ensure standardization in data reporting, only right tumor values were utilized for growth data associated with microarray studies.