(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.