One cannot stress the significance of that. Our minds are not like mice. We understand dogs, but we don't get cats. Their mind works differently. Rodents differ at least as much as cats from us. Autism in mice, regardless of similarties in behavior or name, cannot be compared to autism in humans.
Lately, I have been programmed to append "in mice" in any headline related to drugs. Unless headlines says something like FDA approved.
EDIT: I meant to say "append in my head".
I mod down anyone whose comment is essentially nothing but "in mice".
It's just a way of being smugly dismissive without adding anything of value to the conversation.