Search on: SPLEEN FOCUS-FORMING VIRUSES 
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Descriptor English:   Spleen Focus-Forming Viruses 
Descriptor Spanish:   Virus Formadores de Foco en el Bazo 
Descriptor Portuguese:   Vírus Formadores de Foco no Baço 
Synonyms English:   Focus-Forming Virus, Spleen
Focus-Forming Viruses, Spleen
Friend spleen focus forming virus
Friend spleen focus-forming virus
Rauscher Spleen Focus-Forming Virus
SFFV
Spleen Focus Forming Viruses
Spleen Focus-Forming Virus  
Tree Number:   B04.613.807.375.525.850
B04.820.650.375.525.850
Definition English:   Strains of MURINE LEUKEMIA VIRUS that are replication-defective and rapidly transforming. The envelope gene plays an essential role in initiating erythroleukemia (LEUKEMIA, ERYTHROBLASTIC, ACUTE), manifested by splenic foci, SPLENOMEGALY, and POLYCYTHEMIA. Spleen focus-forming viruses are generated by recombination with endogenous retroviral sequences. 
Indexing Annotation English:   infection: coordinate IM with RETROVIRIDAE INFECTIONS (IM) + TUMOR VIRUS INFECTIONS (IM) + LEUKEMIA, EXPERIMENTAL (IM) or LEUKEMIA, ERYTHROBLASTIC, ACUTE (IM) (for spontaneous erythroleukemia)
History Note English:   91(86); was see under MOUSE LEUKEMIA VIRUSES 1986-90 
Allowable Qualifiers English:  
CH chemistry CL classification
DE drug effects EN enzymology
GE genetics GD growth & development
IM immunology IP isolation & purification
ME metabolism PY pathogenicity
PH physiology RE radiation effects
UL ultrastructure  
Record Number:   19525 
Unique Identifier:   D013155 

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