Basdag H, Rainer BM, Cohen BA. Molluscum contagiosum: to treat or not to treat? Experience with 170 children in an outpatient clinic setting in the northeastern United States.Pediatr Dermatol. 2015;32(3):353-7. doi:10.1111/pde.12504. PubMed

Chisholm, Hugh, ed. (1911). "Molluscoida". Encyclopædia Britannica. Vol.18 (11thed.). Cambridge University Press. p.675. The simplest molluscan reproductive system relies on external fertilization, but with more complex variations. All produce eggs, from which may emerge trochophore larvae, more complex veliger larvae, or miniature adults. Two gonads sit next to the coelom, a small cavity that surrounds the heart, into which they shed ova or sperm. The nephridia extract the gametes from the coelom and emit them into the mantle cavity. Molluscs that use such a system remain of one sex all their lives and rely on external fertilization. Some molluscs use internal fertilization and/or are hermaphrodites, functioning as both sexes; both of these methods require more complex reproductive systems. [16] Molluscum contagiosum papules commonly appear on the face, trunk, and limbs of children and on the genitals, abdomen, and inner thighs of adults. The condition usually causes bumps that: The three most universal features defining modern molluscs are a mantle with a significant cavity used for breathing and excretion, the presence of a radula (except for bivalves), and the structure of the nervous system. Other than these common elements, molluscs express great morphological diversity, so many textbooks base their descriptions on a "hypothetical ancestral mollusc" (see image below). This has a single, " limpet-like" shell on top, which is made of proteins and chitin reinforced with calcium carbonate, and is secreted by a mantle covering the whole upper surface. The underside of the animal consists of a single muscular "foot". Although molluscs are coelomates, the coelom tends to be small.Opinions vary about the number of classes of molluscs; for example, the table below shows seven living classes, [19] and two extinct ones. Although they are unlikely to form a clade, some older works combine the Caudofoveata and Solenogasters into one class, the Aplacophora. [27] [15] :291–292 Two of the commonly recognized "classes" are known only from fossils. [17] Class a b Porter, S. (1 June 2007). "Seawater Chemistry and Early Carbonate Biomineralization". Science. 316 (5829): 1302. Bibcode: 2007Sci...316.1302P. doi: 10.1126/science.1137284. PMID 17540895. S2CID 27418253.

According to the provisions of Regulation (EU) 2016/679 of the European Parliament and of the Council, of 27 April 2016, on the protection of natural persons with regard to personal data processing and on the free movement of such data and repealing Directive 95/46/EC, we hereby inform you that your data will be processed under the responsibility of LABORATORIOS VIÑAS SA for the purpose of carrying out the maintenance and management of relations with users, so that we can answer their requests for information, queries or suggestions. Some molluscs sting or bite, but deaths from mollusc venoms total less than 10% of those from jellyfish stings. [99] Budd, G. E. & Jensen, S. A critical reappraisal of the fossil record of the bilaterian phyla. Biol. Rev. 75, 253–295 (2000).Molusk medicinski pripomoček je zasnovan tako, da je za uporabo povsem varen, vsebuje priloženo zelo natančno ščetkasto nanašalo, ki omogoča uporabo na način papkanja na sami leziji. Posodica raztopine Molusk onemogoča iztekanje tekočine, tudi če je posodica v vodoravnem položaju. Zdravljenje moluskov Molluscs have developed such a varied range of body structures, finding synapomorphies (defining characteristics) to apply to all modern groups is difficult. [12] The most general characteristic of molluscs is they are unsegmented and bilaterally symmetrical. [13] The following are present in all modern molluscs: [14] [16] Gubanov, A.P.; Peel, J.S. (2003). "The early Cambrian helcionelloid mollusc Anabarella Vostokova". Palaeontology. 46 (5): 1073–1087. Bibcode: 2003Palgy..46.1073G. doi: 10.1111/1475-4983.00334. S2CID 84893338. Mollusks are extremely varied: they have great diversity. That may be why there is no word in English for the phylum as a whole. "In an evolutionary sense, mollusks are plastic material". [1] They have much more variety than their ancient rivals, the brachiopods. [2] Mollusca is the second-largest phylum of invertebrate animals, after Arthropoda; members are known as molluscs or mollusks [a] ( / ˈ m ɒ l ə s k/). Around 76,000 extant species of molluscs are recognized. [3] The number of fossil species is estimated between 60,000 and 100,000 additional species. [4] The proportion of undescribed species is very high. Many taxa remain poorly studied. [5]