Search for dissertations about: "NATURAL SCIENCES Biology Organism biology Developmental biology"

Showing result 16 - 20 of 20 swedish dissertations containing the words NATURAL SCIENCES Biology Organism biology Developmental biology.

  2. 16. The Xenopus tropicalis model for developmental endocrine and reproductive toxicity : Histological and molecular endpoints for disrupted spermatogenesis

    Author : Sofie Svanholm; Cecilia Berg; Oskar Karlsson; Valérie Langlois; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Endocrine disrupting chemicals; Reproductive toxicology; Developmental toxicology; Spermatogenesis; Transgenerational; Xenopus tropicalis; Biology with specialization in Environmental Toxicology; Biologi med inriktning mot miljötoxikologi;

    Abstract : Endocrine disrupting chemicals (EDCs) are linked to adverse effects in both humans and wildlife. There are however, large knowledge gaps regarding cause-effect and dose-response relationships between the interference with endocrine pathways and adverse effects in the organism, especially at puberty and in subsequent generations. READ MORE

  4. 17. Mapping Transcriptomes in Tissues

    Author : Ludvig Larsson; Joakim Lundeberg; Stefania Giacomello; Naveed Ishaque; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; spatially resolved transcriptomics; spatial transcriptomics; transcriptomics; data analysis; rumsligt upplöst transkriptomik; rumslig transkriptomik; transkriptomik; dataanalys; Biotechnology; Bioteknologi;

    Abstract : Over the past few decades, the advent of pioneering biotechnological methods has allowed scientists to analyze the molecular components of multicellular organisms with remarkable precision. The field of transcriptomics has witnessed a rapid development of technologies for gene expression profiling of biological samples. READ MORE

  5. 18. The Origin of Tetrapod Limbs and Girdles: Fossil and Developmental Evidence

    Author : Catherine Anne Boisvert; Per Erik Ahlberg; Rolf Ohlsson; Johan Ledin; Lennart Olsson; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Organism biology; Organismbiologi;

    Abstract : Around 375 million years ago, the first tetrapods appeared, marking one of the most important events in vertebrate evolutionary history. The fin to limb transition saw the appearance of fingers and a weight bearing pelvic girdle. READ MORE

  6. 19. Streptomyces sporulation - Genes and regulators involved in bacterial cell differentiation

    Author : Jessica Larsson; Biologiska institutionen; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Streptomyces coelicolor; venezuelae; morphological differentiation; WhiH; WhiA;

    Abstract : Streptomycetes are Gram-positive bacteria with a complex developmental life cycle. They form spores on specialized cells called aerial hyphae, and this sporulation involves alterations in growth, morphogenesis and cell cycle processes like cell division and chromosome segregation. READ MORE

  7. 20. A small amoeba at the crossroads of the big RNAi world : MicroRNA biogenesis and Argonaute function in Dictyostelium discoideum

    Author : Zhen Liao; Fredrik Söderbom; Gerhart E. H. Wagner; Christina Dixelius; Kriton Kalantidis; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; RNAi; microRNA; Argonaute protein; miRNA biogenesis; Dictyostelium discoideum; social amoeba; Dicer; development; growth; Biology with specialization in Molecular Cell Biology; Biologi med inriktning mot molekylär cellbiologi;

    Abstract : Small non-coding RNA (ncRNA) mediated gene silencing, known as RNAi, is a key regulatory mechanism of gene expression in eukaryotes. MicroRNAs (miRNA), one major type of small ncRNAs, are about 21nt long and bound by Argonaute proteins. READ MORE