Title Details: | |
Exercise 9: Differentiation – Embryogenesis |
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Authors: |
Giannakouris, Nikolaos Nikolioudakis, Nikolaos Kokkorogiannis, Theodoros |
Reviewer: |
Papanikolaou, Georgios |
Subject: | MEDICINE AND HEALTH SCIENCES, LIFE SCIENCES, BIOLOGICAL SCIENCES > LIFE SCIENCES > MOLECULAR BIOSCIENCES > CELL BIOLOGY MEDICINE AND HEALTH SCIENCES, LIFE SCIENCES, BIOLOGICAL SCIENCES > LIFE SCIENCES > PHYSICAL ANTHROPOLOGY > HUMAN GENETICS MEDICINE AND HEALTH SCIENCES, LIFE SCIENCES, BIOLOGICAL SCIENCES > LIFE SCIENCES > MOLECULAR BIOSCIENCES > MOLECULAR BIOLOGY MEDICINE AND HEALTH SCIENCES, LIFE SCIENCES, BIOLOGICAL SCIENCES > LIFE SCIENCES > MOLECULAR BIOSCIENCES > GENETICS MEDICINE AND HEALTH SCIENCES, LIFE SCIENCES, BIOLOGICAL SCIENCES > LIFE SCIENCES > MOLECULAR BIOSCIENCES > CELL BIOLOGY > CELL PHYSIOLOGY |
Description: | |
Abstract: |
The purpose of the exercise is to familiarize the trainees with the fertilization of the egg, the first divisions of the zygote and the onset of cellular differentiation in the early stages of embryogenesis. For this purpose, gametes and zygotes of the sea urchin are used because of their many advantages in the experimental handling (ease of obtaining gametic material, ease of in vitro fertilization of the oocyte, large and isolecithin oocyte, ease of microscopic observation of the first divisions). The exercise gives the opportunity to observe 'live' under the microscope the fertilization of the oocyte by the spermatozoa and (with appropriate advance preparation) the stages of two, four, eight, sixteen, thirty-two and sixty-four cells (morula to blastula stage). It also allows to discuss the phenomena of stem cell totipotency and cell differentiation.
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Graphic Editors: |
Maneta, Myrsini |
Type: |
Chapter |
Creation Date: | 2015 |
Item Details: | |
License: |
http://creativecommons.org/licenses/by-nc-sa/3.0/gr |
Handle | http://hdl.handle.net/11419/4139 |
Bibliographic Reference: | Giannakouris, N., Nikolioudakis, N., & Kokkorogiannis, T. (2015). Exercise 9: Differentiation – Embryogenesis [Chapter]. In Giannakouris, N., Nikolioudakis, N., & Kokkorogiannis, T. 2015. Guide to Biology Laboratory and Tutorial Exercises [Laboratory Guide]. Kallipos, Open Academic Editions. https://hdl.handle.net/11419/4139 |
Language: |
Greek |
Consists of: |
1. Απεικόνιση, ραχιαία άποψη και κοιλιακή άποψη του ώριμου θαλάσσιου εχίνου. 2. Σχηματική παράσταση της εσωτερικής ανατομίας του θαλάσσιου εχίνου και φωτογραφίες των γονάδων ενός θηλυκού (επάνω) και ενός αρσενικού (κάτω) ατόμου. 3. Τρόπος συλλογής των ωαρίων και των σπερματοζωαρίων του θαλάσσιου εχίνου. |
Is Part of: |
Guide to Biology Laboratory and Tutorial Exercises |
Publication Origin: |
Kallipos, Open Academic Editions |