Figure 1, The original version of Entrez had just 3 nodes: nucleotides, proteins, and PubMed abstracts. Entrez has now grown to nearly 20 nodes - The NCBI Handbook - NCBI Bookshelf

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Figure 1. The original version of Entrez had just 3 nodes: nucleotides, proteins, and PubMed abstracts. Entrez has now grown to nearly 20 nodes.

Figure 1The original version of Entrez had just 3 nodes: nucleotides, proteins, and PubMed abstracts. Entrez has now grown to nearly 20 nodes

From: Chapter 15, The Entrez Search and Retrieval System

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The NCBI Handbook [Internet].

McEntyre J, Ostell J, editors.

Bethesda (MD): National Center for Biotechnology Information (US); 2002-.

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