The relation between genetic markers, such as blood groups and secretor status of patients and malignant neoplasms, has been investigated by several workers (Aird, Bentall, Mehigan, and Roberts, 1954; Aird, Lee, and Roberts, I960; Beasley, I960; Hembold, i959). There is some evidence that an association exists between certain blood groups and malignant neoplasms. However, haemoglobin which is a...

The genital mechanisms of defense are not well understood and are therefore ignored during therapy. This fact results in a great number of cases of treatment failure. The mucosa is an important protective factor of the genital female system, through self-defense mechanisms, and secretor antibodies (immunoglobulin A). The lymphoid tissue exerts protective anti-inflammatory activity, besides inhi...

The advent of hybridoma technology in 1975 (1) represented a quantum leap in the field of tumor immunology. For the first time, B-lymphocytes from immunized hosts could be immor talized by means of fusion with drug selected non-immunoglobulin secretor murine myeloma cells. These fused cell products could then be cloned and propagated indefinitely. The super natant fluids of cultures from litera...

The expression of the ABH and Lewis blood groups was determined in blood and saliva samples from two semi-isolated Black communities of Northern Brazil: Cametá and Alcântara. The distributions of ABO blood group phenotypes and the ABH secretor status frequencies showed no significant differences between these populations. In contrast, there was a difference regarding the frequency of the red bl...

To follow human milk oligosaccharide (HMO) biosynthesis and in vivometabolization, mother infant feces from 68 mother–infant dyads at 2, 6, 12 weeks postpartum were analyzed, with 18 major HMOs quantitated. Fucosylated neutral core HMO levels dependent on mothers’ Lewis/Secretor status, whereas most sialylated independent. Infant fecal excretion of gradually declined age, especially for structu...