E6	Embryonic day 6
E12	Embryonic day 12
D1	Post-hatching day 1
DEGs	Differentially expressed genes
FC	Fold change
FDR	False discovery rate
GO	Gene ontology
BP	Biological process
CC	Cellular component
MF	Molecular function
KEGG	Kyoto Encyclopedia of Genes and Genomes
RPKM	Reads per kilobase million mapped reads
qRT-PCR	Quantitative real-time RT-PCR
SD	Standard deviation
UU	Up-up
UM	Up-maintain
UD	Up-down
MU	Maintain-up
MD	Maintain-down
DU	Down-up
DM	Down-maintain
DD	Down-down