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. 1996 Dec 10;93(25):14815–14820. doi: 10.1073/pnas.93.25.14815

Table 2.

Cytotoxicity of immunotoxins on different cell lines

Immunotoxin Cell lines
NR6M U87MG.ΔEGFR U87MG
MR1scFvPE38KDEL 1(16) 7–10 (110-160) >1000
 2 h 30(480)
 48 h 0.5–0.6 (8-10)
MR1scFvPE38REDLK 3–4  (48-64) 40(640) >1000

The concentration of immunotoxin at which 50% inhibition of protein synthesis occurs (IC50) is given in ng/ml with the value in pM in parentheses. All values are for 24-h exposure to immunotoxin unless stated otherwise.