Words similar to helas

Example sentences for: helas

How can you use “helas” in a sentence? Here are some example sentences to help you improve your vocabulary:

Therapeutic ratios, calculated as CC 50 /EC 50 , were found to be in a range from 64 - 1400, with the exception of ZnPPIX, for which the ratios were in the range of 1 - 3. The compounds were also tested in CV-1 cells and a human cell line (HeLaS3) for their effect on cell growth (Table 3).