Complex sentence: The biocellulose induces the fetus itself to form the missing layer producing a neoduramater, which will protect the exposed medulla and stop the leakage of the cerebrospinal fluid.
Split into simpler sentences: The biocellulose induces the fetus itself to form the missing layer, the duramater. The neoduramater will protect the exposed medulla and stop the leakage of the cerebrospinal fluid.