Claim · model-written summary
A region of cell enlargement commonly surrounded tumors and extended into normal mesophyll.
- Taxon
- Graptopetalum paraguayense
_Graptopetalum_paraguayense_-_leaves.jpg?width=60)
Graptopetalum paraguayenset0 - Organ / stage
- mesophyll tissuee0
- Outcome
- region of cell enlargemente0
Not reportedMaterialGeneCompoundInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Graptopetalum_paraguayense_-_leaves.jpg?width=500)
Verbatim
e0“This complex is usually surrounded by a region of cell enlargement which extends into the originally normal mesophyll tissue”
t0“Graptopetalum paraguayense”
Title
Leaf tumors induced in Graptopetalum paraguayense by gamma radiation.
O L STEIN; A H SPARROW; L A SCHAIRER PubMed 1959
Other claims from this paper (6)
- Intervention effect High gamma radiation doses induced small protuberances on Graptopetalum leaves after about 5 to 6 weeks.
- Mechanism Histology indicated new tumor-like growth centers causing the protuberances.
- Observation The growth centers were distributed roughly at random and appeared self-limited in size.
- Observation Mature tumors had a dead central region surrounded by rows of small cells.
- Observation The number of tumors per leaf averaged a maximum of about ten in two experiments.
- Recommendation The authors suggest the leaf-tumor system could assay tumor initiation by chemical and physical agents.