Update README.md

README.md

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 # IgBert
 
-Pretrained model on protein and antibody sequences using a masked language modeling (MLM) objective. It was introduced in the paper [Large scale paired antibody language models](https://arxiv.org/abs/2403.17889). 
+Model pretrained on protein and antibody sequences using a masked language modeling (MLM) objective. It was introduced in the paper [Large scale paired antibody language models](https://arxiv.org/abs/2403.17889). 
 
-The model is finetuned from Igbert-unpaired using paired antibody sequences from paired OAS.
+The model is finetuned from Igbert-unpaired using paired antibody sequences from the [Observed Antibody Space](https://opig.stats.ox.ac.uk/webapps/oas/).
 
 # Use