96 Hour Chick Embryo Serial Section

Another Way To Look at Serially Sectioned Frog and Chick Embryos What we show here is the first part of a project we call '4-D Embryology--Embryos in Three Dimensions and Their Changes Over Time.' We captured digital images of all the sections of serially sectioned embryos. We then used the sequence of images of an embryo to make a QuickTime digital movie. After we made movies of several serially sectioned frog and chick embryos, we started using them in our developmental biology labs. Students like watching and using these QuickTime movies to learn about developing embryos, and we want to share these movies with other students of developmental biology.

Section, 24 hr sagital, 33 hr serial x-sections, 48 or 56 hr. Foto devochek ls models. REFERENCE: Patten, Embryology of the chick. Arteries and veins) in the 96 hr whole mount.

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What you can see here are small 'postage-stamp' versions of these movies of serially sectioned frog and chick embryos. All show sequential cross sections going anterior-to-posterior (head-to-tail). Get Quicktime Serially Sectioned Frog Embryo Movies 4 mm 5 mm 7 mm 10 mm Serially Sectioned Chick Embryo Movies 24 hr 33 hr 33 hr 48 hr 48 hr 56 hr If you want to use these movies in your classes, you can download the full-size QuickTime movies of these embryos. To download these movies, you need to be a member of the SDB. If you're not a member, --it really doesn't cost that much to join and it's a great organization to belong to.

Anyway, e-mail me, Laurie Iten ( ), if you want to know how and where to download these movies. Why We Look At Serial Sections of Embryos When we study embryology, we need to visualize the changes that occur in developing embryos. Direct observation is the ideal method for visualizing developing embryos. Everyone enjoys watching living embryos develop or watching time-lapse movies of developing embryos.

Some embryos remain transparent throughout their development and we can see what's going on inside and outside at the same time. Most embryos are not transparent; once they become more than a few cell layers thick, we only see what's happening on the outside. To see what's going on inside, we typically cannot dissect an embryo because it's too small. We have to look at serial sections of embryos. Serial sections are where we slice an embryo as if it was a sausage. We affix each section, in order, on a microscope slide and stain the sections before we look at them with the microscope. We then 'read' these two-dimensional sections to try to visualize the three-dimensional organization of all the layers and parts of an embryo at one stage of development.