once cells are non-adherent, add 3 mlof rpmi with 10% fbs to inactivate the trypsin collect and centrifuge cells at 300 x g for 3 min.

How would the previous sentence be correctly capitalized?
Once cells are non-adherent, add 3 mlof RPMI with 10% FBS to inactivate the trypsin Collect and centrifuge cells at 300 x g for 3 min.