tokens: Apoptosis was prevented when CD4 truncated at residue 402 was expressed ; however , cells expressing mutated receptors that do not associate with p56 ( lck ) ( mutated at the dicysteine motif and truncated at residue 418 ) but which conserved proximal domains of the cytoplasmic tail underwent apoptosis like wild- type CD4 .
folded_tokens: apoptosis was prevented when cd4 truncated at residue 402 was expressed ; however , cells expressing mutated receptors that do not associate with p56 ( lck ) ( mutated at the dicysteine motif and truncated at residue 418 ) but which conserved proximal domains of the cytoplasmic tail underwent apoptosis like wild- type cd4 .
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