<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31372698</termId><termName>serology</termName><termType>PT</termType><termNote><![CDATA[ In medical science, that branch of immunology which studies antibodies in the serum or other bodily fluids, and antigens present on cells of blood. ]]></termNote><termCreatedDate>2026-03-30 20:40:31</termCreatedDate><relation><relationType>BT</relationType><termId>31342127</termId><termName>medicine</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31411587</termId><termName>blood</termName><termType>PT</termType></relation></term>  </Zthes>