It should be noted that these bilamellar
structures were only observed in the LPS that was spontaneously released by the bacteria (treatment 2, Table 1) and were not observed in experiments that used purified LPS (treatments 3 and 4, Table 1), which is more similar to the natural conditions of the infection.
This edition combines and updates material from three previous manuals on bilamellar
tarsal rotation procedure, Trabut procedure, and the final assessment of candidate trichiasis surgeons.
The major criteria required are multiple (>2) basal cell carcinomas (or one if under 20 years of age), odontogenic keratocysts of the jaws proven by histopathology, 3 or more palmar or plantar pits, bilamellar
calcification of the falx cerebri, bifid, fused or markedly splayed ribs, and first-degree relatives with nevoid basal cell carcinoma.