TY  - JOUR 
T1  - Occurrence and ultrastructural characterization of "nuage" during oogenesis and early spermatogenesis of Piaractus mesopotamicus Holmberg, 1887 (Teleostei)
JO  - Brazilian Journal of Biology
A1  - Abdalla, F. C.
A1  - Cruz-Landim, C.
SN  - 1519-6984
UL  - 10.1590/S1519-69842004000400002
VL  - 64 
Y1  - 2004
PB  - Brasil 
ER  -