| muscle weakness | A vague complaint of debility, fatigue, or exhaustion attributable to weakness of various muscles. The weakness can be characterised as subacute or chronic, often progressive, and is a manifestation of many muscle and neuromuscular diseases. (12 Dec 1998) |
|---|---|
| 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) |