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Chinese researchers created the first human embryo model (disc-Gastruloid) that successfully undergoes gastrulation and forms primitive streak-like structures, enabling the growth of organ seed cells in vitro, marking a major advance for regenerative medicine.
This paper introduces an in-vitro framework with two procedurally generated languages to study cross-lingual generalization in language models, finding that tokenization's preservation of reusable substructure is more critical than lexical similarity or data balance for transferring capabilities across languages.