Complex sentence: Approximately a decade later, Marcus rises from the dead with the aid of his leeches; James Marcus: however, something wondrous happened, it took the T-Virus inside of my queen years to procreate my new life.
Split into simpler sentences: Approximately a decade later, Marcus rises from the dead with the aid of his leeches. However, something wondrous happened, it took the T-Virus inside of my queen years to procreate my new life.