"The researchers suspect this cellular GPS system plays roles other than wound healing . The primary cilia could serve as a fail-safe device against uncontrolled cell movement , says Christensen . Without chemical stimulation , the primary cilia would restrain cell migration , preventing the dangerous displacement of cells that is associated with invasive cancers and fibrosis , the scientists explain . On the other hand , defective primary cilia might fail to provide correct directional instructions during cell differentiation . This failure could be another link connecting primary cilia to severe developmental disorders , the researchers suggest . Protruding through the cell membrane , primary cilia occur on almost every non-dividing cell in the body . Once written off as a vestigial organelle discarded in the evolutionary dust , primary cilia in the last decade have risen to prominence as a vital cellular sensor at the root of a wide range of health disorders , from polycystic kidney disease to cancer to left-right anatomical abnormalities ."
"Demonstrating the vacuity of preaching sub-optimal design ... an idea from faulty Darwinian reasoning ? And taking clues from original design ( cellular machinery ) to design our own optimal nanotechnology ? Does that make the original design optimal/above par/good ? Clockwork That Drives Powerful Virus Nanomotor Discovered"
"primary cilia in the last decade have risen to prominence as a vital cellular sensor at the root of a wide range of health disorders ,"
"Does that make the original design optimal/above par/good ?"