Cell is not an android.
Cell is a 100% organic creature. He has absolutly no robotic, cybernetic, mechanical, or artificial parts to him. He was not built, he was grown. If anything, you cuold call him a test tube baby.
Cell is not a cyborg. If anything, 17 and 18 are cyborgs. These two kids are ordionary human teens that Gero took and "upgraded" into what they are today. The only real "androids" were 16 and 19.