Serum myoglobin test has, for the most part, been replaced by the troponin level test to provide a positive diagnosis of a heart attack.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troponin levels are more specific to heart damage than myoglobin levels.erum myoglobin test has, for the most part, been replaced by the troponin level test to provide a positive diagnosis of a heart attack.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..
Screen Spline. Screening Spline is a serrated, hollow core vinyl used for securing window screen into the frames. Spline is pliable and works easily into the screen frame channel to hold the screen mesh securely. Spline comes in a variety of diameters and will fit into almost any screen frame available. PRODUCT INFORMATION.