Evaluate the collective function of references cited together in a given text segment.
Classify their combined role into one of the following categories: 'method', 'background', or 'result'.

Text:These results are similar to other reports [34] in which the proportion of J-Lat cells displaying GFP epifluorescence was synergistically increased by prostratin/ HDACI cotreatments compared to treatments with the compounds alone.
Category: