A 30-year-old heterosexual man presented with a painless erosion lesion on the coronal sulcus for 3 weeks. It was oval, indurated, slightly elevated kissing erosion with clean, smooth bases (Fig. 1). The lesion in the prepuce, being too hard to bend, would flip over all at once when the prepuce was drawn back (dory flop phenomenon). He was otherwise asymptomatic, and the inguinal lymph nodes on...

The hepatitis C virus (HCV) genomic RNA possesses conserved structural elements that are essential for its replication. The 3' nontranslated region (NTR) contains several of these elements: a variable region, the poly(U/UC) tract, and a highly conserved 3' X tail, consisting of stem-loop 1 (SL1), SL2, and SL3. Studies of drug-selected, cell culture-adapted subgenomic replicons have indicated th...

We give a short solution of the kissing number problem in dimension three.

UNLABELLED Kissing molars are a very rare form of inclusion defined as molars included in the same quadrant, with occlusal surfaces contacting each other within a single dental follicle. We present four cases of this pathology: a 35 year-old male, referred to the Oral and Maxillofacial Surgery Department of the Hospital Virgen del Rocio in Seville, and three females of 24, 26, and 31 years, all...

A 39-year-old woman presented with a rare case of "kissing" brainstem cavernomas formed by separate lesions enlarging with simultaneous recurrent hemorrhages, which was successfully treated by staged resection using a trans-fourth ventricular floor approach. She had a familial history of cerebral cavernous angioma, and presented with a history of four episodes of sudden neurological deteriorati...

Peptic ulcer is a Common diseuse with potentially serious complications. Perforation of the one such complication that can be fatal if left untreated. We present rare case kissing peptic ulcers in 42-year-old patient who presented hematemesis and melena was admitted to intensive care unit hemorrhagic shock post trauma. Despite failed endoscopic hemostasis measures, successfully treated surgical...

An elementary construction using binary codes gives new record kissing numbers in dimensions from 32 to 128.