Wednesday, June 11, 2008

Solid Foods

Our pediatrician gave us the green light on solid foods...I'm not sure this is what he had in mind.  

Jacob absolutely loves to gnaw on his toes, fingers, and whatever else he can put in his mouth.

Tuesday, June 10, 2008

Frogs with crazy hearts

Since most of you don't know what I do...sometimes I even wonder what I am doing... I thought I would post a quick picture of my frogs.  This is a picture of one normal frog and one frog that I caused to have its heart and gut reversed.  These frogs are five days old. 

 I am studying how the left-right axis is determined and how even though you look symmetrical on the outside (two hands, two eyes, etc) you are not symmetrical on the inside.  Frogs are just easier to study this than humans.  So, what does this have to do with real life?  Well, there are a few human syndromes where the left-right axis is messed up internally.   The biggest one where all the organs are switched is called situs inversus, but you can also have instances where only the heart or gut is reversed.  Sometimes people are fine who have this condition, and other times it is a major cause of congenital heart defects.