Deletion of a DNA sequence in eight of nine families with X-linked ichthyosis (steroid sulphatase deficiency)

Deficiency of steroid sulphatase (STS) is associated with ichthyosis, with failure of the placental production of oestriol in late pregnancy and with difficulties in childbirth. The STS gene has been localised by deletion mapping to the distal tip of the snort arm of the X chromosome, and is of inte...

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