English Language · English
Which choice completes the text so that it conforms to the conventions of Standard English? Swedish scientists Eva Engvall and Peter Perlmann developed a method for measuring the concentration of different proteins in a biological sample. Their ______ ELISA (enzyme-linked immunosorbent assay), is used to detect and measure proteins that indicate the presence of certain diseases.
- 1method called
- 2method, called✓
- 3method-called
- 4method (called
Correct answer
method, called
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