Table 3.

Study phases, cell lines used, and treatments applied in the Cellular Lifespan Study.

Study Phase	Investigator	Time period	Cell lines	Treatments
Phase I	G.S.	Oct 2017-Feb 2018 (4 mo)	HC5,6	1,2,6,11,12,13,19,20,21,22
Phase II	G.S.	Aug 2018-May 2019 (10 mo)	HC1,2,3, SURF1_1,2,3	1,2,3,4,10,14,15,18
Phase III	G.S.	Feb 2019-April 2019 (3 mo)	HC1,2,4	1,2,5,6,16,17
Phase IV	J.M.	May 2019-Oct 2019 (6mo)	HC1,2	1,7,8,9
Phase V	A.S.M.	Oct 2020-June 2021 (8mo)	HC1,2,3, SURF1_1,2,3	1,5

Five phases conducted by different investigators with varying study lengths, cell lines, treatments, and exposures.