However , because maternal IgG is excreted in human milk , and rituximab was detectable in milk from lactating monkeys , women should not breastfeed while treated with MabThera and for 12 months following MabThera treatment .
The above sentence is very complicated. Please provide me a simplified synonymous version consisting of multiple sentences:
However , maternal IgG passes into milk , and rituximab has been detected in breast milk in monkeys . Therefore , women should not breast-feed while taking MabThera and for 12 months after stopping it .