XLI
It is known that an undetectable maternal serum, unconjugated estriol, associated with placental steroid sulfatase (STS) deficiency, may be the cause of cause of XLI.
It is known that an undetectable maternal serum, unconjugated estriol, associated with placental <span class="gene" id="14641695-3-97-114">steroid sulfatase</span> (<span class="gene" id="14641695-3-116-119">STS</span>) deficiency, may be the cause of cause of <span class="disease" id="14641695-3-162-165">XLI</span>.