Injection site reactions : The most common side effects are mild and short-lived, including soreness, redness, or slight swelling at the injection site
That number is remarkable
Briefly, HEK293T cells were seeded in a T-25 flask at a density of 2 10 6 cells one day before transfection, and the next day, cells were co-transfected with RaTG13 or Khosta-2 spike-expressing plasmids containing phCMV-Gag-Pol 5349 and reporter pTG-Luc126 plasmids 62 using the PEIpro transfection reagent (Cat# 101000017, Polyplus Transfection, New York, NY)
Cysteine/glutathione deficiency: a significant and treatable corollary of disease, in The Therapeutic Use of N-Acetylcysteine (NAC) in Medicine
Everything else is contamination and contamination changes your results