all tumor cells are created equal when it comes to telomere biology. Tumor cells that do not express telomerase appear to utilize a telomerase-independent process to maintain telomere length, known as ALT for alternative lengthening of telomeres [1]. Although the existence of this process has been recognized for some time, the precise mechanism by which telomeres are maintained in these cells h...

Introduction F. Jacob (Paris, France), co-creator of the replicon hypothesis and the operon model, opened the workshop with his memories of a summer 40 years ago. In the early morning, he and Sydney Brenner would accompany their eight children to the beach so that the ladies of the two families could sleep. As the two men talked, they illustrated their thoughts by drawing models in the sand. Th...

one of the recent inquiries in the field of hadith studies is the investigation of transferred traditions and their causes and impacts on shi‘i hadith circles. by exploring some traditions in the hadith collection of al-shaykh al-saduq and comparing the textual similarities and also the chain of transmitters, this research attempts to show that traditions of jewish origin in the shi‘i hadith ci...

We establish a reflection principle for three lattice walkers and use this principle to reduce the enumeration of the configurations of three vicious walkers to that of configurations of two vicious walkers. In the combinatorial treatment of two vicious walkers, we make connections to two-chain watermelons and to the classical ballot problem. Precisely, the reflection principle leads to a bijec...

We consider a generalisation of the vicious walker problem in which N random walkers in R are grouped into p families. Using field-theoretic renormalisation group methods we calculate the asymptotic behaviour of the probability that no pairs of walkers from different families have met up to time t. For d > 2, this is constant, but for d < 2 it decays as a power t, which we compute to O(ε) in an...