Figure 1From: Severe phenotype in an apparent homozygosity caused by a large deletion in the CFTR gene: a case reportSequence comparison and alignment between the wt-CFTR sequence (middle capital letters) with the proband sequence eletropherograms. Paternal chromosome (upper sequence) showing the change C to A corresponding to the S4X mutation; and maternal chromosome (lower sequence) with the 23 nucleotides deleted corresponding to the c.120del23-CFTR mutation.Back to article page