Fortunian scalidophoran worms have shown high diversity, with 7 genera and species 10 indeterminate forms. Current studies mainly focused on morphology as well early evolution, ontogeny not been carried out due to the limited number of specimens. Here, we report new material an Orsten-type preserved Indeterminate Form 3 from Zhangjiagou section. Collected specimens different annulus widths indi...

What are they? Ediacarans are a highly distinctive assemblage of fossil organisms, apparently all marine. Most typical are frondose, discoidal and segmented forms. Their overall taxonomic diversity is modest, but there is considerable disparity and they include one rather bizarre group with prominent three-fold body symmetry. A striking feature of many forms is their modular construction and th...

[This corrects the article on p. 379 in vol. 11, PMID: 27994807.].

OBJECTIVE To assess the growth pattern of children in Yazd, and compare it with standards outlined by the World Health Organisation. METHODS The cross-sectional study, which was conducted in 2009, involved 20 guidance schools of Yazd city. A total of 1921 children were chosen by simple cluster method and general demographic and anthropometric information regarding the subjects was extracted f...

Growth and pattern formation occur simultaneously in many epimorphic fields and it has been suggested that specification of positional information is somehow linked to cell division. It is possible, therefore, that boundary regions responsible for the specification of positional information produce cell growth factors. In this paper I review the properties of some known growth factors, describe...

an analysis of the stages of crop growth presents an important step in the improvement of production management. through growth analysis, planning for planting systems, fertilization, pruning operations, harvest time as well as obtaining economical yield can be more accessible. therefore, a development of mathematical models simulating plant growth would be helpful in improving crop management,...

Background Cystic fibrosis (CF) is the most prevalent lethal chronic genetic and multivariate disease, widespread in Iranian population. The aim of this study was to evaluate the condition of patients with CF from various dimensions in the last decades in Iran.<b...