Identification of eight-cell tw32 homozygous lethal mutants by aberrant compaction.
J Exp Zool
; 203(1): 81-8, 1978 Jan.
Article
em En
| MEDLINE
| ID: mdl-624924
ABSTRACT
Early cleavage stage (4- and uncompacted 8-cell) embryos from experimental (+/tw32 X +/t32) and control (male +/tw32 X female +/T) matings were recovered at 56 hours post coitum, cultured, separated into uncompacted and compacted 8-cell embryo groups, and either analyzed histologically for cytoplasmic lipids or cultured through the morula-to-blastocyst transformation. Abnormal compaction was associated with excess cytoplasmic lipids at the 8-cell stage (P less than 0.01). Also, 89.2% (33/37) of the original uncompacted experimental embryos underwent developmental arrest characteristic of tw32 homozygous lethals. Thus, aberrant compaction, a newly reported symptom of the tw32/tw21 syndrome, affords a visual means to identify tw32 homozygotes at 8-cell stages.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Genes Letais
/
Homozigoto
/
Camundongos
/
Morfogênese
/
Mutação
Tipo de estudo:
Diagnostic_studies
/
Prognostic_studies
Limite:
Animals
/
Pregnancy
Idioma:
En
Revista:
J Exp Zool
Ano de publicação:
1978
Tipo de documento:
Article