Ontogeny and distribution of cells in B lineage in the American leopard frog, Rana pipiens

Ontogeny of B and T cells in sea bass (Dicentrarchus labrax, L.)

“…Cytoplasmic Ig + cells were detected 1-2 weeks earlier in ontogeny (52 dph) than sIg + cells. The appearance of early cIg + cells (preB cells) during ontogeny is supported by the results on trout by Castillo et al (1993) and are in agreement with the result reported for amphibians (Zettergren, 1982;Hadji-Azimi et al, 1982) and mammals (Landreth & Kindkade, 1984;van Rees et al, 1990). In mammals, it is known that preB cells express heavy chains in the cytoplasm and some of them have small amounts of surface chains associated with surrogate light chain VpreB and 5 (Karasuyama et al, 1996), while in chickens, rearrangement of Ig heavy and light chain loci appears to occur simultaneously to produce sIg + B cells (Weill & Reynaud, 1995).…”

Phylogeny and ontogeny of fish leucocytes

“…sequence of IgM appearance is also reported for trout [101], and comparable with the first m-chain appearance in amphibians [102,103] and mammals [104]. The first cytoplasmic Ig C plasma cells were detected in carp head kidney from 1 mpf [66,105].…”

Definitive hematopoietic stem cells first develop within the major arterial regions of the mouse embryo

“…The pronephros in amphibians and fish is a well‐described site of hematopoiesis (Turpen et al ., 1981; Walmsley et al ., 1994; Bertwistle et al ., 1996; Gering et al ., 1998). IgM‐positive B cells are found in the mesonephros of the chick (Zettergren and Cutlan, 1992) and also in Rana pronephros and mesonephros (Zettergren, 1982). Macrophages are detected in UGRs of E11.5 mouse embryos (De Felici et al ., 1986), and as described above, hematopoietic progenitors are also found in the UGRs of E10 and E11 mouse embryos.…”