The branch of pathology that deals with diseases of the blood(noun)
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Use "hematopathology" in a sentence
"The hematopathology service at The Children's Hospital of Philadelphia coordinates with various laboratory services for the diagnosis of disorders involving hematopoietic cells."
"Alternatively, specimens can be submitted directly to the appropriate laboratories with the request for hematopathology diagnostic interpretation."
"Specimens can be sent to the hematopathology serviceusing the Bone Marrow Submission Form, and will be assigned to the appropriate laboratories."