Serum myoglobin test has, for the most part, been replaced by the troponin level test to provide a positive diagnosis of a heart attack. This is because troponin levels are more specific to heart damage than myoglobin levels.erum myoglobin test has, for the most part, been replaced by the troponin level test to provide a positive diagnosis of a heart attack. This is because troponin levels are more specific to heart damage than myoglobin levels.
The siRNA sequence is modified to introduce a short loop between the two strands. The resulting transcript is a short hairpin RNA (shRNA), which can be processed into a functional siRNA by Dicer in its usual fashion..
Best Answer: Jing - online tool for both screen capture and screen recording. It's free, but with limitations. You can't really edit your screen shots and there is a time limit to the screen recordings. Snagit - it's a desktop software. It's not free but much more advanced screen capture and great editing functionality. It can also video record your screen, but not edit the videos.