I think that the bump is a little too much, the bumps should be smaller and less pronounced IMHO. The tubes are a nice touch. Maybe if they were slightly more translucent it mite work better. Also if you want it to look like it's sitting liquid then maybe adding small particles of debris that are in front and around the embryo mite work quite well.
Looks good
Alan
Technical Director - Framestore
Currently working on: Your Highness
IMDB