<p>I worked in a lab that had 40 people in it. [url=<a href=“http://ink.primate.wisc.edu/~watkins/members.html]AVRL:”>http://ink.primate.wisc.edu/~watkins/members.html]AVRL:</a> Lab Members<a href=“admittedly,%20this%20lab%20had%20a%20split%20and%20some%20of%20the%20members%20went%20into%20a%20different%20one%20a%20few%20years%20after%20i%20left”>/url</a></p>
<p>So yes, labs with 40 people exist, but no, they don’t offer very good mentoring.</p>