John P Trinkaus' MBL Embryology Course Notes, Notebook II, 1939. Page 13

Notes from Donald Costello's lecture. Trinkaus continues his notes on spiral cleavage with information on the development of micromeres, the direction of cleavage and six cell lineage diagramsLecturer: D. P. Costello, Lecture "Cell lineage and spiral cleavage" (Information taken from the 1939 Embryology Course Book)Page 13 of 72 from the second notebook of lecture and laboratory notes that John P. Trinkaus took during his time as a student in the Marine Biological Laboratory Embryology Course in 1939 in Woods Hole, MANote