血相是指一定量循环血液中红细胞、白细胞、血小板的各自总数及红细胞、白细胞按形态分类计数及其所占的分数。感染、贫血、中毒、电离辐射等可致白细胞、红细胞与血小板的量与质的改变，是医学诊断的决定因素。环境医学研究血相也是常用指标。
实验后的动物血相恢复良好。
The blood pictures of the irradiated animals recovered well after reinfusion.
血铅值约200同智商下降8点相联系。
Blood levels of about 200 are associated with an eight-point drop in IQ.
蛋白的血浓也并不与其药理学效应成比例，也许很难确定和区分生物时相。
The protein concentration in the circulation may not correlate with the pharmacological effect and it may be difficult to identify or sample the biophase.
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