Ultimately, BBS is distinguished from Laurence-Moon syndrome based on which genes are affected. However, one of the genetic mutations that cause BBS has also been found in individuals with Laurence-Moon syndrome, which illustrates the difficulty in distinguishing the two. There are 14 types of BBS, each of which is caused by a different genetic mutation. These 14 genes are BBS1, BBS2, ARL6 / BBS3, BBS4, BBS5, MKKS / BBS6, BBS7, TTC8 / BBS8, B1 / BBS9, C12ORF58 / BBS10, TRIM / BBS11, C4ORF24 / FLJ35630/BBS12, FLJ20345 / MKS1, and CEP290.
An ultrasound in pregnancy can be either done as a âroutineâ ultrasound, usually between 18-20 weeks or it is done for specific reasons which usually depend at the time of pregnancy. There are essentially three different types of ultrasounds, depending on how much information is required. 1  The limited ultrasound,
If you are pregnant, chances are you will have at least one ultrasound before your baby is born. Around 70 percent of pregnant women in the US will have an ultrasound. In the UK, this number is higher because ultrasounds are carried out as routine procedures for all pregnant women.Ultrasounds are used to determine the size of your baby, the estimated due date, and whether the babyâs organs are developing well.round 70 percent of pregnant women in the US will have an ultrasound. In the UK, this number is higher because ultrasounds are carried out as routine procedures for all pregnant women. Ultrasounds are used to determine the size of your baby, the estimated due date, and whether the babyâs organs are developing well.