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. 2013 Nov 21;23(6):563–575. doi: 10.1089/scd.2013.0420

Table 3.

Effects of EGF, BDNF, and IGF-1 Supplements on the Quality Grading of Human Blastocysts Resulting from r2PN Zygotes

Growth factors   Blastocyst grading
EGF BDNF IGF-1 No. of blastocyst BG1 BG2 BG3
6 1 1 4
+ 3 0 1 2
+ 2 0 1 1
+ 2 1 0 1
+ + 6 2 1 3
+ + 5 1 2 2
+ + 2 1 0 1
+ + + 13 6 4 3

Sign of subtraction means that this kind of growth factor was not present in culture medium.

Sign of addition means that this kind of growth factor was supplemented in culture medium.