A few genes with NA as ensembl_gene_id in human pairs

[guillaumecharbonnier]

Dear CellTalkDB team,

I have noticed a few genes with NA as ensembl_gene_id in human pairs.
More details:
https://colab.research.google.com/drive/1Xg9xirP0iqhSFnbMqC_XxhXflmLhoOCg?usp=sharing

Thanks for your DB