When Kiera is dragging Solomon away from the crowd her right arm varies position - in shots from behind it is on his collar but in the shots from the front it is holding his arm.
When Piron Alec gets an access denied error, due to Sadtech Alec being in his systems, the image that he has open in the background changes from one shot to the next.
"It's a neurotoxin that affects the circulatory system". If it were a neurotoxin, it would be affecting the central nervous system; that's what the "neuro" bit means.