Table 3. The ability of gemcitabine and cisplatin to inhibit tumor tissue growth.

Chemotherapies	Cases (n)
1000 μg/ml gemcitabine
response	7
non-response	27
1500 μg/ml gemcitabine
response	6
non-response	28
20 μg/ml cisplatin
response	9
non-response	24
25 μg/ml cisplatin
response	18
non-response	15