mass deficiency

1. Effects of citrin deficiency in the perinatal period: Feasibility of newborn mass screening for citrin deficiency
   围生期柠檬素缺乏的影响：新生儿柠檬素缺乏普查可行性
2. Urinary organic acid analysis with gas chromatograph/ mass spectrometry and biotinidase activity assay of blood confirmed the diagnosis of biotinidase deficiency.
   运用尿气相色谱质谱联用及干燥血液生物素酶活性测定进行筛查，诊断符合生物素酶缺乏症。
3. Postmenopausal osteoporosis is characterized by accelerated loss of skeletal bone mass and increased risk for fractures and is linked to estrogen deficiency.
   绝经后骨质疏松症可造成妇女全身骨量减少，骨折危险性增加。
4. Conclusions Detection of free air, fluid and abnormal echo mass in abdomen by sonography can make up the deficiency of radiology and prove rapid and reliable attestation to clinical diagnosis of surgical abdominal emergency.
   结论超声诊断胃肠穿孔可检出腹腔内游离气体、积液和异常回声包块等征象，能弥补X线的不足，为临床外科急腹症提供快速而可靠的诊断依据。
5. Virus infection, autoimmune reaction and environment toxin can lead to reduction of islet β cells mass and absolute deficiency of insulin, which is the pathologic foundation of type ⅰ diabetes mellitus ( IDDM).
   病毒感染、自身免疫反应、环境毒素导致的胰岛β细胞减少、胰岛素绝对缺乏是Ⅰ型糖尿病的病理基础，恢复糖尿病个体β细胞数及其功能正常是治愈糖尿病的关键。
6. Damp-hot and fire-hot accumulating, which condense into a mass that is the Biao; Deficiency of vital Qi and deficiency of both spleen and kidney; that is the Ben?
   湿热下注、火热内蕴、结而为肿是病之标；正气不足、脾肾两亏为病之本。

noun

1. the amount by which the mass of an atomic nucleus is less than the sum of the masses of its constituent particles

   Synonym:    mass defect