Complex sentence: This has been questioned by several authors and study findings and it has emerged that the original studies reporting specific interactions between SERCAs and artemisinins were undertaken in a "Xenopus" oocyte system with a variable signal: noise ratio.
Split into simpler sentences: This has been questioned by several authors and study findings. The original studies reporting specific interactions between SERCAs and artemisinins were undertaken in a "Xenopus" oocyte system with a variable signal: noise ratio.