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- Publications
- Influence
Anatomy of ovary and ovule in dandelions (Taraxacum, Asteraceae)
- K. Musial, B. Płachno, P. Świątek, J. Marciniuk
- Biology, Medicine
- Protoplasma
- 23 September 2012
The genus Taraxacum Wigg. (Asteraceae) forms a polyploid complex within which there are strong links between the ploidy level and the mode of reproduction. Diploids are obligate sexual, whereas… Expand
Formation of germ-line cysts with a central cytoplasmic core is accompanied by specific orientation of mitotic spindles and partitioning of existing intercellular bridges
- P. Świątek, J. Kubrakiewicz, J. Klag
- Biology, Medicine
- Cell and Tissue Research
- 5 May 2009
Animal germ cells tend to form clonal groups known as clusters or cysts. Germ cells within the cyst (cystocytes) are interconnected by intercellular bridges and thus constitute a syncytium. Our… Expand
Can a stench be beautiful? – Osmophores in stem-succulent stapeliads (Apocynaceae-Asclepiadoideae-Ceropegieae-Stapeliinae)
- B. Płachno, P. Świątek, G. Szymczak
- Biology
- 2010
Carrion flower stapeliads are examples of olfactory mimicry, forming sapromyiophilous flowers, which mimic food sources or oviposition sites to attract fly pollinators. The aim of this work was to… Expand
Chemical structure of phenothiazines and their biological activity.
- Agata Jaszczyszyn, K. Gąsiorowski, +4 authors B. Czarnik-Matusewicz
- Chemistry, Medicine
- Pharmacological reports : PR
- 2012
Phenothiazines belong to the oldest, synthetic antipsychotic drugs, which do not have their precursor in the world of natural compounds. Apart from their fundamental neuroleptic action connected with… Expand
Ovary cord structure and oogenesis in Hirudo medicinalis and Haemopis sanguisuga (Clitellata, Annelida): remarks on different ovaries organization in Hirudinea
- P. Świątek
- Biology
- Zoomorphology
- 4 June 2008
In Hirudo medicinalis and Haemopis sanguisuga, two convoluted ovary cords are found within each ovary. Each ovary cord is a polarized structure composed of germ cells (oogonia, developing oocytes,… Expand
Oogenesis in the leech Glossiphonia heteroclita (Annelida, Hirudinea, Glossiphonidae). I. Ovary structure and previtellogenic growth of oocytes
- P. Świątek
- Biology, Medicine
- Journal of morphology
- 1 December 2005
Glossiphonia heteroclita has paired ovaries whose shape and dimensions change as oogenesis proceeds: during early previtellogenesis they are small and club‐shaped, whereas during vitellogenesis they… Expand
Structure of the germinal vesicle during oogenesis in leech Glossiphonia heteroclita (Annelida, Hirudinea, Rhynchobdellida)
- P. Świątek
- Biology, Medicine
- Journal of morphology
- 1 March 2005
Oogenesis in the glossiphoniid leech Glossiphonia heteroclita (Hirudinea, Rhynchobdellida) is nutrimental, i.e., the growing oocyte is supported by specialized germline cells, the nurse cells. The… Expand
Ovary architecture of two branchiobdellid species and Acanthobdella peledina (Annelida, Clitellata)
- P. Świątek, A. Urbisz, +5 authors J. Klag
- Biology
- 1 March 2012
Abstract The aim of this study was to present data about ovary organization and oogenesis in two small groups of clitellate annelids, i.e. in representatives of Acanthobdellida ( Acanthobdella… Expand
Oogenesis in the leech Glossiphonia heteroclita (Annelida, Hirudinea, Glossiphoniidae) II. Vitellogenesis, follicle cell structure and egg shell formation.
- P. Świątek
- Biology, Medicine
- Tissue & cell
- 1 August 2006
By the end of previtellogenesis, the oocytes of Glossiphonia heteroclita gradually protrude into the ovary cavity. As a result they lose contact with the ovary cord (which begins to degenerate) and… Expand
Ovary organization and oogenesis in two species of Lumbriculida (Annelida, Clitellata).
- A. Urbisz, P. Świątek
- Biology, Medicine
- Zoology
- 1 April 2013
The aim of the present study is to describe the organization of the ovary and mode of oogenesis at the ultrastructural level in two representatives of Lumbriculida -Lumbriculus variegatus and… Expand