"not further extended" is correct and usable in written English.
This phrase can be used to indicate that something has not been or will not be changed, continued, or lengthened. For example, "The store's hours will remain the same and are not further extended."
O-GlcNAc modified proteins are found mostly in the nucleoplasm, cytoplasm and to some extent in the mitochondria, and are not further extended by glycosylation.
The tco89Δ cells were long-lived compared to wild-type cells, and their CLS was not further extended by rapamycin or caffeine treatment (Fig. 2B).
We observed that lifespan of BB-treated wild-type animals was not further extended by the presence of ampicillin to arrest bacterial growth (Table 1), indicating that BB may have extended lifespan by relieving microbial stress.
Similarly in Caenorhabditis elegans, inhibition of TOR pathway using RNAi showed an increase in lifespan that was not further extended when TOR RNAi was used in an eat-2 mutant, which was a DR mimetic in C. elegans (Hansen et al., 2007).
clk-1 mutant worms live longer than their WT counterparts (Lakowski & Hekimi, 1996) and their long lifespan is not further extended by the eat-2 mutation (Lakowski & Hekimi, 1998), suggesting that clk-1 is necessary for eat-2 induced lifespan extension.
Excessive chlorine dosage of >10 mg/l would not further extend the disinfected radius.
"Either the regime considered it safe to let her go or they felt they could not further extend her sentence," I was told by another Western diplomat.
Ot B could not further extend the lifespan of daf-2 e1370) daf-2 e1370uld extend the lIIIspan of skn-1(zu67) IV.
Ot B could not further extend the lifespan of long-lived mutant of insulin/IGF-1-like receptor (daf-2).
Ot B could not further extend mean lifespan of sir-2.1 ok434) sir-2.1 ok434e2519) IVI, but could further extend lifespandof eat-2.
This hypothesis was consistent with our results that Ot B could not further extend the lifespan of the long-lived daf-2 mutant (Fig. 4a).
