Phenocore, Phenotyping and Pathology Core


We are currently short staffed but accepting CBC, QNMR, Histology and Anatomic Pathology requests.

We do NOT accept hazardous materials or human specimens.

Due to staffing we can not accept Serum or Plasma chemistry tests at this time.
For clinical chemistry we suggest sending frozen serum/plasma to Idexx Bioanalytics, or 
Idexx vet reference laboratories (for domestic species),
You will have to establish an account and send frozen specimens by fedex.

Overview of Services 

 Mission: The Phenotyping Core promotes preclinical translational science at Johns Hopkins, by assisting and collaborating in the characterization and use of genetically and phenotypically relevant animal models of disease and gene function, by:

  1. Preclinical research pathology support and collaboration, including anatomic pathology (macroscopic dysmorphology and histopathology), and clinical pathology.
  2. Assistance with study design, training and education in animal model pathobiology, evaluation techniques, phenotyping strategies, for genetically engineered and other preclinical models.

Services/collaborations include:

  • Anatomic Pathology (Preclinical, pre GLP, GLP);
  • Clinical Pathology (Preclinical hematology (CBC), Clinical Chemistry, urinalysis, etc);
  • Body Composition by QNMR (EchoMRITM-100);
  • Faxitron® high resolution radiography;
  • Specimen Photography, macrophotography, photomicroscopy, morphometry;
  • Training in procedures, techniques;
  • RAR/MCP histology.

Grant support: (%FTE) collaborations should be developed for large and long term projects involving pathology. 

Authorship: Johns Hopkins authorship guidelines can be found at Pathology support and collaboration frequently involve acquisition, analysis and interpretation of data, as well as contributions to study design, images and manuscript preparation that warrant authorship.

Acknowledgments: Cores should be acknowledged in publications. 


Cory Brayton, DVM - Director Phenotyping Core
Diplomate, ACLAM, ACVP
Phone: 410-502-3050
Email: **preferred contact

Susan Aja, PhD
CSMR, QNMR coordinator

Vanessa Rodas-Eral
Phone: 410 955 9784

Location and hours of operation

Hours Location

Monday - Friday 9:00am - 5:00pm  

733 North Broadway
Miller Research Building; Office 851
Baltimore, Maryland 21205 

 Office Phone: 410-502-3050

Links and Resources

  1. Johns Hopkins Phenotyping (and Preclinical Pathology) Core (Additional resources, laboratory manual, course information)
  2. Behavioral Core at the School of Medicine (Neurobehavioral Phenotyping MRB/BRB)
  3. Johns Hopkins Ocology Tissue Services (TMA, Digital Imaging and Immunohistochemistry)
  4. Centralized Service for Metabolism Research (CSMR - Metabolic Phenotyping)
  5. Center for Resources in Integrative Biology (CRIB - Metabolomics, Mass Spectrophotometry etc)
  6. Small Animal Imaging Resource Program (SAIRP – Imaging MRB/BRB)
  7. Transgenic Core Johns Hopkins (targeted mutations, transgenesis, rederivation)


Name Role Phone Email Location
Cory Brayton, DVM, DipACVP
MRB; Suite 851
Vanessa Rodas-Eral
Administrative Executive
410 955 9784
MRB; Suite 811
Susan Aja, PhD
QNMR coordinator
443 287 7671
Rangos 473

Service list

Search available services: View: by category alphabetically
Anatomic Pathology (4)
Clinical Pathology (14)
Experimental Pathology (RAR Necropsy) - Large Animal (4)
Histology RAR/MCP: Processing etc (11)
Histology RAR/MCP: Special Stains etc (30)
Phenotyping: QNMR (1)
Phenotyping: Other (2)