| directional atherectomy | Removal of coronary atherometer with instrumented catheter. (05 Mar 2000) |
|---|---|
| directional cloning | DNA insert and vector molecules are digested with two different restriction enzymes to create noncomplementary sticky ends at either endof each restriction fragment. This allows the insert to be ligated tothe vector in a specific orientation and prevents the vector fromrecircularising. (09 Oct 1997) |
| pelvic direction | The direction of the axis of the pelvis. (05 Mar 2000) |
|---|---|
| preferred direction | <microscopy> Orientation of a specimen as related to a structural or morphological direction, with respect to the polars. (05 Aug 1998) |