Sökning: "arthropods"

Visar resultat 36 - 37 av 37 avhandlingar innehållade ordet arthropods.

  1. 36. Early land plant spores from the Paleozoic of Sweden – taxonomy, stratigraphy and paleoenvironments

    Författare :Kristina Mehlqvist; Berggrundsgeologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Spores; early land plants; taxonomy; stratigraphy; biostratigraphy; Silurian;

    Sammanfattning : The Silurian through earliest Devonian, between ca 444 and 412 million years ago, was characterized by significant changes in global climate and environment. At that time, plants and animals had begun to expand the colonization of previous relatively desolate terrestrial landscape. LÄS MER

  3. 37. Finding the ligand : retinoid receptor activation in the CNS

    Författare :Alexander Mata de Urquiza; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Nuclear hormone receptors (NRs) comprise a large family of ligand activated transcription factors, found in vertebrates, arthropods and nematodes. Among the members of the NR family are the receptors for small, lipophilic ligands such as the steroid hormones, vitamins A and D, thyroid hormone oxysterols and bile acids. LÄS MER