sentence: Since samples in the cucumber study were stored at − 18 ° C prior to analysis , a storage stability study of Bacillus thuringiensis subsp. kurstaki strain PB 54 in high ‐ water and high ‐ acid commodities in support of the representative uses are not available and are , according to the current international OECD guideline ( OECD , 2006 ) , still required ( data gap ) .