Previously we have described a mutant Hfr strain in which incompatibility between the integrated F factor and an autonomous F-prime (F') factor was abolished. The mutation (inc) was located in the integrated F factor. F-prime factors isolated from the mutant Hfr strain have the same incompatibility behavior as those isolated from normal Hfr strains. Reintegration of these F' factors into the ch...

Kernikterus (bile staining of brain nuclei at necropsy or jaundice causing neurological signs during life) not associated with haemolytic disease has been reported in the literature during the last few years. Black-Schaffer, Kambe, Furuta and Moloney (1954) described 13 cases which had died with kernikterus in Hiroshima during the neonatal period. Eleven of the 13 cases were premature infants. ...

Background: When fetal red cells enter the maternal circulation from placenta, an event would be happened that is described as feto-maternal hemorrhage (FMH). This life-threatening condition could be detected by using RBC antigens (surface antigens and intracellular antigens). Therefore, the measurement of fetal RBC in an artificial model would be useful to calculate FMH and consequently the do...

abstract background a vast variety of factors may cause recurrent pregnancy loss. blood group incompatibility of parents could cause abortion. the examination of couples or twins, blood groups showed that the blood group incompatibility can affect adversely the outcome of pregnancy. couples with blood group incompatibility are more involved in spontaneous miscarriage. antigenes in two different...

Recent genetic analyses have demonstrated that self-incompatibility in flowering plants derives from the coordinated expression of a system of loci. To address the selective mechanisms through which a genetic system of this kind evolves, I present a three-locus model for the origin of gametophytic self-incompatibility. Conventional models assume that a single locus encodes all physiological eff...

BACKGROUND AND AIMS Heterostyly is a floral polymorphism characterized by the reciprocal position of stamens and stigmas in different flower morphs in a population. This reciprocal herkogamy is usually associated with an incompatibility system that prevents selfing and intra-morph fertilization, termed a heteromorphic incompatibility system. In different evolutionary models explaining heterosty...

In fungi, heterokaryon incompatibility is a nonself recognition process occurring when filaments of different isolates of the same species fuse. Compatibility is controlled by so-called het loci and fusion of strains of unlike het genotype triggers a complex incompatibility reaction that leads to the death of the fusion cell. Herein, we analyze the transcriptional changes during the incompatibi...

At last, clear evidence has been obtained, from transformation of the pollen incompatibility reaction of Brassica, showing that angiosperm self-incompatibility involves separate genes for the pollen and pistil incompatibility recognition processes.