Search PubMed for scientific literature. Use when the user asks to find papers, search literature, look up research, find publications, or asks about recent studies. Triggers on "pubmed", "papers", "literature", "publications", "research on", "studies about".
Search NCBI PubMed for scientific literature using BioPython's Entrez module.
from Bio import Entrez
Entrez.email = "[email protected]"
# Search
handle = Entrez.esearch(db="pubmed", term="CRISPR delivery methods", retmax=20, sort="date")
record = Entrez.read(handle)
handle.close()
id_list = record["IdList"]
print(f"Found {record['Count']} results, showing top {len(id_list)}")
# Fetch details
handle = Entrez.efetch(db="pubmed", id=id_list, rettype="xml")
records = Entrez.read(handle)
handle.close()
for article in records['PubmedArticle']:
medline = article['MedlineCitation']
pmid = str(medline['PMID'])
title = medline['Article']['ArticleTitle']
# Get authors
authors = medline['Article'].get('AuthorList', [])
first_author = f"{authors[0].get('LastName', '')} {authors[0].get('Initials', '')}" if authors else "Unknown"
# Get journal and year
journal = medline['Article']['Journal']['Title']
pub_date = medline['Article']['Journal']['JournalIssue'].get('PubDate', {})
year = pub_date.get('Year', 'N/A')
# Get abstract
abstract_parts = medline['Article'].get('Abstract', {}).get('AbstractText', [])
abstract = ' '.join(str(a) for a in abstract_parts)[:300]
print(f"PMID: {pmid}")
print(f"Title: {title}")
print(f"Authors: {first_author} et al.")
print(f"Journal: {journal} ({year})")
print(f"Abstract: {abstract}...")
print(f"Link: https://pubmed.ncbi.nlm.nih.gov/{pmid}/")
print()
*PubMed Search: "CRISPR delivery methods"*
_Found 1,234 results. Top 5:_
*1.* Lipid nanoparticle-mediated CRISPR delivery...
_Smith J et al. — Nature (2026)_
PMID: 12345678
pubmed.ncbi.nlm.nih.gov/12345678
*2.* AAV-based CRISPR therapeutics: advances and challenges
_Chen L et al. — Cell (2026)_
PMID: 12345679
pubmed.ncbi.nlm.nih.gov/12345679
Support these query patterns:
"CRISPR"[Title] AND "delivery"[Title] — title-specific"2026"[Date - Publication] — date filter"Nature"[Journal] — journal filterreview[Publication Type] — type filterAfter showing results, suggest: