obsolete abnormal motile primary cilium morphology true any structural anomaly of a primary cilium which may contain a variable array of axonemal microtubules and also contains molecular motors; motile primary cilia display a distinct twirling motion that directs fluid flow asymmetrically across the cellular surface to affect asymmetric body plan organization MP:0013204 This term has been determined to be identical to MP:0004131 abnormal motile primary cilia morphology MP:0004131 abnormal nodal cilia morphology abnormal nodal cilium morphology