Template:Carnegie Collection stage 12 table

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Carnegie Collection - Stage 12 
Serial No. Pairs of somites Size (mm) Grade Fixative Embedding Medium Plane Thinness (µm) Stain Year Notes
209 ca_24 EH3 Ch.,15 Poor Alc P Cor. 50 Al. coch. 1902
250 19? E , 2 (11, 10x9x9 Poor p ? Sag. 20 Al. coch. p
384 P E 2_5 Ch.,13 Poor Formol P Trans. 10 H.&E. 1907 Macerated. Narrow yolk stalk
486 21 E.,4 Ch., 22 Good Corros. acetic P Trans. 10 Al. Coch. 1911
1062 29 E.,4.5 Ch., 20 Good Formol P Trans. 20 Al. coch. 1915 Transitional to next stage
2197 ? E_,5_3 Ch., 19.5 Poor Formol P Trans. 10 Al. coch, or. G. 1918
4245-7 ca.24 E.,3.5 Ch., 24 Good Alc, formol P Trans. 10 Al. coch. 1923 Caudal neuropore widely open
4479 P E.,5 .8 Ch , 17 Poor Formol P Trans. 40 Al. coch. 1923 Macerated. Upper lirnb buds not visible
4736 26 E.,3.0 Ch.,20 Good Formol P Cor. 10 Al. coch. 1924 No upper limb buds. Caudal neuropore closed
4759 ? E.,4.5 Ch.,15 Good Formol P Trans. 15 H.&E. 1924 Neural tube folded
4784 23 E_,3 Good P P Trans. 10 p 1924
5035 25-28 E.,3.8 Ch.,18 Good Formol C-P Trans. 10 Al. coch. 1925
5048 ca_25 E_,3_5 Good Formol C-P Trans. 10 Al. coch. 1925 Tubal. Injured
5056 25 E,,3 Ch.,12 Good Formol P Trans. 10 Al. coch. 1925
5206 ? E.,4 Ch., 51x31x30 Poor ?? P Trans. 20 Al. coch. 1926 Tubal
5300 ? E., 4.5 Ch,16.5 Poor Formol P Trans. 20 Al. coch. 1926 Autopsy. Partly macerated
5923 28 E.,4 Ch.,15 Exc. Formol P Trans. 10 Al. coch. 1929
6097 25 E,3.4 Ch., 12.5 Exc. Formol C-P Trans. 10 Al. coch, eosin 1930 Tubal. Ag added to slides 1-3
6144 27 E. 3.3 Ch.,11 Good Lysol—Zenker C—P Trans. 10 Al. coch. 1930
6488 28 E, 32 Ch,22 Good Formol C—P Trans. 10 Al. coch. 1932
6937 26 E.,3 Ch , 12 Poor Formol C—P Cor. 10 I.H.,or.G. 1934 Tubal. Caudal neuropore closed
7724 ca.29 E,3.5 Ch.,18 Good Formol C—P Sag. 8 H.&E. 1940 Caudal end broken
7852 25 E , 3.7 Ch,26 Exc. Formol C—P Trans. 10 H.&E. 1940 Typical for stage 12
7999 ca.28 E,3.2 Ch , 15 Exc. Bruin C-P Trans. 10 H.&E. 1942 Caudal defect
8505a 24 Ch, 23.5 Exc. Formol C-P Trans. P H. Phlox. 1947
8505b 23 Ch,24 Exc. Formol C-P Sag. p Azan 1947 Twins
8941 28 E,4.9 Ch, 35 Exc. Zenker C-P Trans. 6 I.H. 1927 Univ. Chicago No. H 1261
8942 25 E, 38 Ch, 35 Formal-Zenker C-P Cor. 5 11-1. 1930 Univ. Chicago No. H 1382
8943 22 E. 3.9 Ch, 20.4 Exc. Formal-Zenker C-P Trans. 8 H.&E. 1934 Univ. Chicago No. H 1481
8944 25 E,4 Ch,,25 Exc. Formal-Zenker C-P Sag. 8 I.H. 1936 Univ. Chicago No. H 1514
8963 22 E, 3.8 Ch , 14.5 Fair Formol C-P Trans 10 I.H. 1928 Univ. Chicago. No. H 1093 Studied byWen (1928)
8964 23 E,2.8 Ch - 25 Poor Formol p Trans 8 I.H. 1928 Univ_ Chicago No. H984 Studied by Wen (1928)
9154 24 E, 5 4 Exc Formal C-P Trans I.H. & phlox. 1953
Abbreviations
  • Size - E. is the greatest length of the embryo and Ch. is the mean diameter of the chorion.
  • Grade - total grade of the specimen and includes both its original quality and the condition of the mounted sections.
  • Embedding medium - paraffin (P) or a combination of celloidin and paraffin (C-P).
  • Fixative - formalin (Formol), alcohol and formalin (Alc, formol), Bouin (Bouin solution)
  • ? - unknown or not determined.
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