![Merkel disc is a serotonergic synapse in the epidermis for transmitting tactile signals in mammals | PNAS Merkel disc is a serotonergic synapse in the epidermis for transmitting tactile signals in mammals | PNAS](https://www.pnas.org/cms/10.1073/pnas.1610176113/asset/59fe0995-c579-496d-b506-7829871a76a0/assets/graphic/pnas.1610176113sfig08.jpeg)
Merkel disc is a serotonergic synapse in the epidermis for transmitting tactile signals in mammals | PNAS
![Merkel disc is a serotonergic synapse in the epidermis for transmitting tactile signals in mammals | PNAS Merkel disc is a serotonergic synapse in the epidermis for transmitting tactile signals in mammals | PNAS](https://www.pnas.org/cms/10.1073/pnas.1610176113/asset/73c95df6-1a41-488e-b716-1f4687f6ae5b/assets/graphic/pnas.1610176113fig04.jpeg)
Merkel disc is a serotonergic synapse in the epidermis for transmitting tactile signals in mammals | PNAS
![Merkel disc is a serotonergic synapse in the epidermis for transmitting tactile signals in mammals | PNAS Merkel disc is a serotonergic synapse in the epidermis for transmitting tactile signals in mammals | PNAS](https://www.pnas.org/cms/10.1073/pnas.1610176113/asset/8c839168-10d2-4f44-bdb5-a88745005b4e/assets/graphic/pnas.1610176113sfig06.jpeg)
Merkel disc is a serotonergic synapse in the epidermis for transmitting tactile signals in mammals | PNAS
![Merkel disc is a serotonergic synapse in the epidermis for transmitting tactile signals in mammals | PNAS Merkel disc is a serotonergic synapse in the epidermis for transmitting tactile signals in mammals | PNAS](https://www.pnas.org/cms/10.1073/pnas.1610176113/asset/ee7867e2-5328-4a77-8147-23256c316553/assets/graphic/pnas.1610176113fig06.jpeg)
Merkel disc is a serotonergic synapse in the epidermis for transmitting tactile signals in mammals | PNAS
![Merkel disc is a serotonergic synapse in the epidermis for transmitting tactile signals in mammals | PNAS Merkel disc is a serotonergic synapse in the epidermis for transmitting tactile signals in mammals | PNAS](https://www.pnas.org/cms/10.1073/pnas.1610176113/asset/b890b5ed-8a3a-4e65-9a04-a6328eae820a/assets/graphic/pnas.1610176113fig01.jpeg)