(1) Sebum excretion rate measurements overlying an open comedone (blackhead) were significantly lower than those obtained from normal skin.
(2) The breeds studied in order of increasing susceptibility were Red Masai, Blackhead Persian, Merino, Dorper, Corriedale and Hampshire.
(3) There's no mention of belly button fluff either - but blackheads, snot, puke, pus, scabs, tears, smegma, eyelid crumbs, vaginal discharges, menstrual blood and other gunk are all acceptable fodder, especially when dried to a crust under the fingernails.
(4) Species examined were the budgerigar, yellow-headed Amazon parrot, canary, halfmoon conure, lesser hill mynah, and blackheaded nun.
(5) The proportion of Blackhead Persian genes in South African Karakuls is estimated to be 0.2745, to which a certain degree of gene flow from other fat-tailed sheep has possibly to be added.
(6) Puberty and early sexual development were studied in 143 Libyan fat-tailed ram lambs, equally representing Brownhead and Blackhead strains of this breed.
(7) Certain other enigmas are mentioned including why some patients have much oil and little acne, and some vice versa; why some blackheads and whiteheads initiate inflammation and suppuration and others not; why cysts and why scars form in some patients and not in others.
(8) 25 and 17 Salmonella strains could be isolated from 429 and 423 blackheaded gulls (Larus ridibundus), respectively, during two years of examination.
(9) A study was made of the carry-over effect of long photoperiods followed by short photoperiods ou the fattening and gonadal response in a photoperiodic migratory species, the Blackheaded Bunting (Emberiza melanocephala).
(10) Gene frequencies at 10 blood polymorphic loci have been used to compare Karakuls from Uzbekistan, Union of Soviet Socialist Republics with South African Karakuls and to evaluate the influence of local Blackhead Persian sheep on the genetic composition of South African Karakuls.
(11) Characteristic early lesions in acne vulgaris are the open and closed comedones (blackheads and whiteheads) which are well known to contain a "plug" of cornified material.
(12) Albino rats were used to study some remote side effects (total reproduction, embryotoxicity, and teratogenic action) of the Bulgaria Ronidazol-Pharmachim preparation, analogous to the one produced by the firm MS & D--USA (Ridzol 10 per cent water-soluble powder) used in veterinary practice as a prophylactic and therapeutic agent in the case of swine dysentery and turkey blackhead.
(13) The existence of various foci of epithelial perforation, manifested clinically by a point hyperkeratosis similar in appearance to blackheads, suggests transfollicular elimination.
(14) The two strains did not differ in any of the measured parameters in a consistent way, yet the Brownhead lambs tended to be slightly heavier and to have a slightly larger testis diameter than Blackheads.
(15) Comedones (blackheads) were found in apocrine sites in 37, but also in retroauricular sites in 18 and were considered to be an important physical sign for early diagnosis.
(16) The results showed high numbers of both groups of bacteria in skin bearing blackheads, papules or pustules and in non-acne adolescent skin.
(17) Groups of photosensitive, unstimulated or stimulated, male blackheaded buntings were subjected to photoregimes of 15 hr of green light of three intensities and 9 hr of dark per day.
Comedo
Definition:
(n.) A small nodule or cystic tumor, common on the nose, etc., which on pressure allows the escape of a yellow wormlike mass of retained oily secretion, with a black head (dirt).
Example Sentences:
(1) The aim of this work is to investigate the anti-comedo activity of 20% azelaic acid cream topically applied in a group of teen-agers affected by acne.
(2) On the other hand, three patients with in situ duct carcinoma (one comedo and two clinging type) developed subsequent invasive carcinoma.
(3) Aneuploidy was not significantly increased in tumours showing histological signs of greater malignancy such as cribriform-comedo type or invasive growth.
(4) Clinically, NFK appears mostly as linear and unilateral groups of dark comedo-like plugs.
(5) Our observations from thymidine labeling are consistent with a viewpoint regarding cribriform-papillary intraductal carcinoma as relatively bland, and comedo intraductal carcinoma as a distinctly more dangerous entity.
(6) Marked mucin-production and "comedo" pattern seem to be histological factors of the hyperechoic US image of adenocarcinoma.
(7) DCIS of the comedo type most often were c-erbB-2 positive and exhibited aneuploid nuclear DNA histograms.
(8) The patient had a 9-year history of multiple keratotic papules and comedo-like pits on the medial border of the left foot.
(9) All mucinous adenocarcinomas also contained other histologic patterns: microglandular (four), cribriform (three), comedo (two), solid (two), and hypernephroid (one).
(10) Tumors associated with a higher risk of remaining cancer are those of the comedo type and papillary type in terms of intraductal spread, those of the small solid alveolar type and pure scirrhous type in terms of lymphatic invasion, and those measuring 2cm or more.
(11) A micronized benzoyl peroxide, in a magnesium aluminum silicate-alcohol gel, appears to achieve dramatic objective improvement of the comedo and papular stages of acne, as well as associated seborrhea.
(12) It is suggested that comedo naevus is a hamartomatous abnormality of the hair follicle in which all layers, including the external root sheath, are involved and from which trichilemmal cysts may arise.
(13) Optical microscopical examination of serial sections showed that the tumor parenchyma was deeply seated along the boundary zone between the cutis and subcutis around the lower half of a giant comedo, and extended into the surrounding tissues from the non-keratinized epithelial portion of the giant comedo where the non-keratinized epithelium merged with the upper, keratinized epithelium.
(14) In this study we report the results obtained in the treatment of all types of acne (comedo or papulo-pustular acne).
(15) A significant association between p21 expression and tumor histotype was found: among ductal carcinomas the comedo variety was always positive; conversely, lobular tumors were more frequently negative.
(16) Diagnostic criteria for urothelial carcinoma are compact formations without stroma being sharply delineated from stroma, extensive ductal growth pattern with necroses of comedo type, high mitotic rates and perifocal inflammation.
(17) It is also suggested that the tumor may be the lobular equivalent of the ductal infiltrating Comedo carcinoma.
(18) Comedo-like lesions of the palm, present since birth, are studied electronmicroscopically and their eccrine nature demonstrated.
(19) The first skin changes appeared one year after the diagnosis was set, and they were in the form of maculopapular nodules, comedos of the closed and open type on the forehead and chin.
(20) All histologic slides from 279 patients have been reevaluated and the different tumors classified according to a modified classification system in which invasive ductal carcinoma of comedo type is distinguished from invasive tubuloductal carcinoma.