We ask two questions concerning the creation and maintenance of boundaries between forest and fynbos biomes in the southern Cape, South Africa: 1) is the presence of forest vegetation constrained to nutrient-rich soils?
Interaction between ephrin-B2 and EphB4 at the arterial venous interface is required to provide repulsion signals for the establishment and maintenance of boundaries between these vessels [ 35,37].
Dentists who belong to an established profession, continue occupational strategies that centre on the protection and maintenance of boundaries [ 12, 62, 63].
The conservation of the clear sequence composition boundary around nucleocyclic TSSs led us to examine whether specific properties of the mutagenic landscape around these TSSs might be involved in the maintenance of the boundary.
One suggested function of SUP is the coordination of stamen- and carpel-specific meristematic cells and hence the maintenance of the boundary between whorls three and four of the floral organ [ 29].
Formal sector health workers were less enthusiastic about the trial, raising concerns about professional hierarchies and the maintenance of a boundary around the formal health service to ensure the exclusion of those they considered untrained, unprofessional and untrustworthy personnel.
Verifying the involvement of FIL in the establishment and maintenance of IM boundaries awaits analysis of expression patterns of meristem, primordia and boundary markers, such as STM, ANT, CUC2 and UFO, in fil inflorescences.
Lipids execute a variety of biological functions including cell signaling, energy storage, and maintenance of compartmental boundaries.
The result also suggests that the formation or maintenance of faceted boundaries is crucial to inhibit grain growth and thus to produce ultrafine-structured materials.
