[Rosette-forming lymphocytes in the peripheral blood of normal children]. / Linfocitos formadores de rosetas en sangre periférica de niños normales.

The study included 180 healthy children distributted into age groups from newborns to 16 years of age. The subpopulations of early E and EAC (T and B) rosette forming lymphocytes were determined. It was found that the main difference is placed in percentual mean values of the newborn where the value of T lymphocytes is less than for the rest of the ages studied, remaining stable beginning at the age of one year. In newborns, the values of B lymphocytes are greater; later, they drop but remain stable also since the age of one.

[T and B lymphocytes in the peripheral blood of the in-utero malnourished new born infant]. / Linfocitos T y B en sangre periférica del recién nacido desnutrido in utero

The per centum distribution of T and B lymphocytes was determined in 30 full term newborns showing adequate development for their gestational age and in 42 full term newborns showing in utero malnutrition. A significant decrease (p less than 0.001) of both lymphocytic subpopulations was found in the in utero malnutrition group. The possibility of a decreased efficiency of the immune response in this group of patients is discussed.