Abstract
Onion bulbs were treated with a streptomycin solution (5 x l0/sup -3/ gamma /ml) and were irradiated with gamma rays (250 r) or with neutrons (30 rads). The data on the number of chromosome rearrangements show that streptomycin has a protective effect of 5l% in the early stage of cell division, but that it has no protectlve effect on the middle and late interphase stages. The onion bulbs were treated with a streptomycin solution at different periods after irradiation and were fixed 24 hours after irradiation. The streptomycin showed a protective effect when administered wlthin a few hours after irradiation, but the number of chromosome rearrangements increased when streptomycin was administered at 9, l2, 16, and 20 hours after irradiation. (TTT)
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Claims 4
Claim · model-written summary
Streptomycin protected onion cells against chromosome rearrangements by 5l% in early cell division.
- Taxon
- Onion
Allium cepat0 - Organ / stage
- early stage of cell divisione0
- Treatment
- streptomycine0
- Outcome
- number of chromosome rearrangementse0
- Direction
- protective effecte0
- Value
- 5l%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The data on the number of chromosome rearrangements show that streptomycin has a protective effect of 5l% in the early stage of cell division, but that it has no protectlve effect on the middle and late interphase stages.”
t0“Onion bulbs”
Claim · model-written summary
Streptomycin had no protective effect at middle and late interphase stages.
- Taxon
- OnionAllium cepat0
- Organ / stage
- middle and late interphase stagese0
- Treatment
- streptomycine0
- Outcome
- number of chromosome rearrangementse0
- Direction
- no protectlve effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The data on the number of chromosome rearrangements show that streptomycin has a protective effect of 5l% in the early stage of cell division, but that it has no protectlve effect on the middle and late interphase stages.”
t0“Onion bulbs”
Claim · model-written summary
Streptomycin was protective when given within a few hours after irradiation.
- Taxon
- OnionAllium cepat0
- Treatment
- streptomycine0
- Outcome
- protective effecte0
- Direction
- protective effecte0
- Qualifier
- wlthin a few hours after irradiatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The streptomycin showed a protective effect when administered wlthin a few hours after irradiation, but the number of chromosome rearrangements increased when streptomycin was administered at 9, l2, 16, and 20 hours after irradiation.”
t0“Onion bulbs”
Claim · model-written summary
Chromosome rearrangements increased when streptomycin was administered 9, l2, 16 or 20 hours after irradiation.
- Taxon
- OnionAllium cepat0
- Treatment
- streptomycine0
- Outcome
- number of chromosome rearrangementse0
- Direction
- increasede0
- Qualifier
- 9, l2, 16, and 20 hours after irradiatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The streptomycin showed a protective effect when administered wlthin a few hours after irradiation, but the number of chromosome rearrangements increased when streptomycin was administered at 9, l2, 16, and 20 hours after irradiation.”
t0“Onion bulbs”
The same questions in other papers
streptomycin · control · Allium cepa (onion)Results agree
1 paper in the same direction as this paper
- positive
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.