Day 11: Birds of a (Colored???)
An MRI's View
The 11-day chick is moving even more. We cannot
get very clear pictures, because it won't hold
still long enough! We can see the "motion
artifacts" in some images. We also see that if
we repeat the same slice over and over, it looks
different each time. Finally, we see lots of
bright spots, especially in the amnion, caused
by "sloshing" of the fluid as the chick moves.
We got lucky and found the chick holding
still a few times. We can see that he has
grown a lot! Frame 143 is the best. You
can even see two parts of the brain
(forebrain and hindbrain). The body is
smaller, and not as easy to see as the
head with its huge eyes.
The upper albumen layer has shrunk
considerably. The allantois with its shell
membranes and blood vessels can be seen in many
places. The chick's aorta (main blood vessel) is
also visible in many frames.
Comments on these images were
supplied by Carl Gregory. Thanks Carl!
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