SUZANE MARGARET FANK-DE-CARVALHO, MISLÉIA RODRIGUES DE AGUIAR GOMES, PEDRO ÍTALO TANNO SILVA, SÔNIA NAIR BÁO

BIOCELL, Vol.34, No.1, pp. 23-36, 2010, DOI:10.32604/biocell.2010.34.023

Abstract The leaf structure and micromorphology characterize plant species and reflex its interactions with the environment. Leaf epidermis sculptures aid high transpiration plants on light reflection. The form and distribution of epicuticular wax crystalloids are important to characterize the surface. Aiming to know the micromorphology and the ultrastructure of G. arborescens, G. pohlii and G. virgata, leaves of these Cerrado native species were collected in Brasília, Distrito Federal, Brazil, at the Olympic Center of the Universidade de Brasília and at Reserva Ecológica do Roncador. Leaves of G. globosa, an Indian native species, were also studied for comparison. Leaves were fractionated,… More >

MI HEON RYU^1,a, JEONG HEE PARK^1,a, JI EUN PARK¹, JIN CHUNG², CHANG HUN LEE³AND HAE RYOUN PARK^1*

BIOCELL, Vol.34, No.1, pp. 15-22, 2010, DOI:10.32604/biocell.2010.34.015

Abstract Tumor cells are often found under hypoxic conditions due to the rapid outgrowth of their vascular supply, and, in order to survive hypoxia, these cells induce numerous signaling factors. Akt is an important kinase in cell survival, and its activity is regulated by the upstream phosphoinositide 3-kinase (PI3K) and receptor tyrosine kinases (RTKs). In this study, we examined Akt activation and RTKs/PI3K/Akt signaling using the hypoxia-mimetic cobalt chloride in oral squamous carcinoma cells. Cobalt chloride increases Akt phosphorylation in both a dose- and time-dependent manner. Blocking the activation of the PI3K/Akt pathway using LY294002 abolished More >

SILVIA VILA, ANA GONZALEZ, HEBE REY AND LUIS MROGINSKI*

BIOCELL, Vol.34, No.1, pp. 7-14, 2010, DOI:10.32604/biocell.2010.34.007

Abstract Embryogenic cultures were initiated from immature Melia azedarach (Meliaceae) zigotic embryos. Explants were induced on Murashige and Skoog (1962) medium with 4.54 μM thidiazuron or 0.45 μM dichlorophenoxyacetic acid. After 6 weeks of culture on induction medium, somatic embryos were categorized in four morphological classes based on the presence of single or fused embryos and if they remained united or not to the original explant; that were evaluated histologically. The somatic embryos of every category were transferred, in groups or individually, on a 1/4 MS medium. Bipolar embryos, the more typically normal ones, had well defined More >

DULCE MA. BARRADAS-DERMITZ^1,*, PATRICIA M. HAYWARD-JONES², MARTÍN MATA-ROSAS³, BEATRIZ PALMEROSSÁNCHEZ², OSCAR B. J. PLATAS-BARRADAS⁴, RODOLFO F. VELÁSQUEZ-TOLEDO²

BIOCELL, Vol.34, No.1, pp. 1-6, 2010, DOI:10.32604/biocell.2010.34.001

Abstract Of the initial six cell lines originating from explants of Taxus globosa, or Mexican yew (stem internode, leaves and meristematic tissue), three were selected for their microbial and oxidation resistance, two from leaves and the other from stem internode. A study of their behavior, both in terms of cell growth, and of baccatin III and paclitaxel production, was developed in suspension cultures with an initially standardized biomass (fresh weight 0.23 g/L) using modified Gamborg’s B5 medium, and an elicitor (methyl jasmonate), on either the first or seventh day of culture, at several levels (0, 0.1, 1, More >

BIOCELL, Vol.33, Suppl.S, pp. 53-98, 2009

Abstract This article has no abstract. More >

BIOCELL, Vol.33, Suppl.S, pp. 1-52, 2009

Abstract This article has no abstract. More >

BIOCELL, Vol.33, Suppl.S, pp. 191-223, 2009

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BIOCELL, Vol.33, Suppl.S, pp. 127-189, 2009

Abstract This article has no abstract. More >

BIOCELL, Vol.33, Suppl.S, pp. 99-126, 2009

Abstract This article has no abstract. More >

BIOCELL, Vol.33, Suppl.S, pp. 271-296, 2009

Abstract This article has no abstract. More >