In vitro growth of tumor cell lines. The 9 tumor cell lines display various patterns of growth and sizes in vitro. Most preferentially grow in clusters, although one line, 14736, grows as a single-cell suspension. (A) MML-12933; (B) LCL-13271; (C) ML-13381; (D) CML-14736; (E) CML-15433; (F) LCL-15446; (G) LCL-17016L; (H) LCL-17016P; (I) LCL-17018. Slides were viewed with a Nikon Eclipse TE2000-U microscope (Nikon Instruments, Melville, NY) using Nikon Plan Fluor lenses at 40× in a cell culture media. Images were acquired using a NIkon Eclipse TE2000-U camera (Nikon Instruments) and were processed with Adobe Photoshop Elements version 3.0 software (Adobe Systems).