title: Report on anti-Dib encountered in two Hong Kong Chinese.
abstract: Two cases of anti-Dib, a rarely encountered antibody, were identified in serum samples referred by hospital blood banks during the past 13 months. Case 1 is a 41-year-old female who required blood for elective surgery. Case 2 is a premature infant suffering from mild neonatal jaundice on day 2 after birth. The anti-Dib in both cases exhibited marked dosage effect. The titer/score against Di(a+b+) and Di(a-b+) red blood cells (RBCs) in case 1 was 8/10 and 32/32, respectively, and in case 2, 4/18 and 32/46. The monocyte monolayer assay (MMA) also gave a similar pattern of results, being l5 percent and 100 percent reactive when tested with Di(a+b+) and Di(a-b+) RBCs in case 1, and 0.4 percent (within normal range) and l4.4 percent in case 2. The patient in case 1 underwent her operation without blood transfusion. The infant in case 2 was treated by phototherapy and subsequently recovered without the need for exchange transfusion.
authors.affiliation: Hong Kong Red Cross Blood Transfusion Service, 15 King's Park Rise, Kowloon, Hong Kong.
authors.forename: C K
authors.initials: CK
authors.lastname: Lin
authors.forename: K H
authors.initials: KH
authors.lastname: Mak
authors.forename: N K
authors.initials: NK
authors.lastname: Chan
authors.forename: C M
authors.initials: CM
authors.lastname: Yuen
authors.forename: A
authors.initials: A
authors.lastname: Devenish
authors.forename: H B
authors.initials: HB
authors.lastname: Chan
authors.forename: K L
authors.initials: KL
authors.lastname: Au
authors.forename: S C
authors.initials: SC
authors.lastname: Szeto