Talk:Paper - The early morphogenesis and histogenesis of the liver in Sus scrofa domesticus, including notes on the morphogenesis of the ventral pancreas

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TABLE OF CONTENTS

PAGE

T. Introduction 2.0... .. ccc ce cee cece cece ee nee eect ee een eet eeeeeeneee 56 II. Morphogenesis .......... ccc ccc ccc cee cece cee eee nee eee eee eeeeneneee 57 1. The simple protonic wall .......... eee e eee cece e cece tence ee 57

A. Stage Loc c cece cece eee nee cee e ee eee eee ee renee eeneee 57

B. Stage 2... ccc cc cece cece eee cee eee ence ne tee eeeeeneee 59

C. Stage B..c. ccc cc ccc cece cece nee cece cent en ee seen eeeeeeees 62

D. Stage 4icc cece cece ccc cece eect eee eect eect esseeceseecce 64

2. Relation of morphologic variations to blood sinuses............... 66

3. General configuration of the external surface.............. .eeeee 67 A. Smooth wall... .. ccc cece ee cece cece een ence eee cence teens 67

B. Papillated wall... .... ccc ccc cece cece cece eee e eee eneeeeeee 67

C. Rod-like extensions. ...... 0... ccc cece ccc e cence cee cee ee eee 67

D. Network of rods. ...... cc cece ccc cee ec ee cee cence en eeeeees 68

4. Comparisons of results with those of other authors............... 68

5. Notes on the ventral pancreas........... ccc ccc eee ccc eceeeeteeeees 72 TIT. Histogenesis ....... 0c. cece ccc cece cece nent ee cence teense te teenens 73 1. The simple, smooth wall of the proton..............cc eee ec eeeee 73

A. Basic structure.......... eee cece ee ee eee ee eee eset ee ee ences 73

B. Development .......... cece ccc cece cece eee ce ee teen eee 74

2. Development of the glandular structure. ......... 0.0... ce cece ee eee 75 A. Potential evaginations in the smooth wall................... 75

B. Papilla formation (Exuberant evaginations)................- 77

C. Rod-formation 2... ..... cc cece cece cece cere tec eee teeeceeeee 78

D. Relation of vascular spaces to protonic structure............. 79

3. Other authors on histogenesisS.............ccccee cece cescecceeece 80

4. Fusion of rods. Collateral growth. Disorganization............. 81

5. Problems in trabeculation............ 0. cc ccceccecccccececeueceee 82

6. The vaso-formative cells of Van der Stricht................c00 005 83

7. The gall-bladder wall... ...... cece cece cece cece eect cence enaes 83


IV. List of embryos... ...... cece cece cence ee cee nee e ee ene eee ceeeeee 84

V. Bibliography ......... cece cece cece eee cece ee eee eee ae ee eeeeeenees 84

VI. Explanation of plates...... 0... ccc cece cece eee cee nee eneeee ences 86